# InterviewBit Problems

Even Reverse : Solved Good Ranges : Solved Two out of Three : Unsolved Height of every node in a tree : Unsolved ARRAY_BUG : Unsolved Sort stack using another stack : Unsolved TEMPLATES : Unsolved Boundary Traversal Of Binary Tree : Solved Modular Expression : Unsolved Find the Defective Ball II : Solved Subarrays Xor less Than B : Unsolved Order of People Heights : Solved Distribute candies : Unsolved Container With Most Water : Unsolved KEEP SWAPPING : Unsolved Design Messenger : Solved Clone a linked list : Unsolved Starting indices of the substrings in s : Unsolved Numbers with most occurences : Unsolved Task Scheduler : Solved CHOOSE4 : Unsolved Remove Duplicates from Sorted Array II : Solved Vowels : Unsolved Combinations : Unsolved Count Complete Tree Nodes : Solved Sum binary tree or not : Unsolved Valid Email Address : Solved ARRAY_2D : Solved Subarrays with B Different Integers : Unsolved QUIRKS MODE : Solved WiFi Routers : Unsolved Special Integer : Solved LOOP_CMPL2 : Solved Points on the Straight Line : Solved Daughters' Ages : Solved Valid phone number : Solved Subarrays Xor less Than B : Solved Valid Email Address : Unsolved Height of every node in a tree : Solved KEEP SWAPPING : Solved ARRAY_IMPL1 : Solved Egg Drop Problem! : Unsolved Maximum Absolute Difference : Solved Burn a Tree : Unsolved Unique Binary Search Trees : Unsolved Best Time to Buy and Sell Stocks I : Solved The Sequence game : Unsolved WiFi Routers : Solved Possibility of finishing all courses gi : Unsolved Count Delete : Unsolved Distance between Nodes of BST : Solved Number of sextuplets (or six values) th : Unsolved Distinct Subsequences : Solved 0/1 String : Solved Level Order : Solved Number of Hosts per Subnet : Unsolved Distribute candies : Solved Next Greater Circular Array! : Unsolved Merge Two Sorted Lists II : Unsolved Zigzag String : Unsolved Shortest Distance in a graph with two d : Solved Spider's Web : Unsolved Largest Permutation : Unsolved Pick from both sides! : Unsolved Minimum Number of Refueling Stops : Unsolved NESTED_CMPL : Solved maximum sum of array with no repeating : Unsolved Palindromic Substrings Count : Unsolved Micro and Lucky Tree : Unsolved Sort stack using another stack : Solved MATH_BUG01 : Solved Stairs : Solved Balanced Binary Tree : Solved Clone a linked list : Solved Ten Black and White Socks : Unsolved Longest Subarray Length : Solved Numbers with most occurences : Solved Prime Numbers : Solved TEMPLATES : Solved Transpose File : Solved Size three subsequences divisible by B : Unsolved Chocolate Distribution : Unsolved Subarrays with B Different Integers : Solved Find Rectangle in binary matrix : Unsolved EDIBLE STRINGS : Unsolved Next Greater Circular Array! : Solved Job Sequencing : Solved Another Coin Problem : Solved Number of Hosts per Subnet : Solved Pairs With Given Xor : Unsolved Thread : Solved QUIRKS MODE : Unsolved Convert an arbitrary Binary Tree to a t : Solved maximum sum of array with no repeating : Solved NESTED_CMPL2 : Solved Spinning Disc's Direction : Solved Count Delete : Solved Spinning Disc's Direction : Unsolved Jelly Beans Jars : Solved Array 3 Pointers : Solved Treasure Hunt : Unsolved Maximum Depth : Unsolved Color of the last ball : Unsolved Equilateral Triangles using Toothpicks : Solved Distinct Primes : Solved Two Numbers : Unsolved Sudoku : Solved Convert to Palindrome : Unsolved Good Subarrays : Unsolved Micro and Lucky Tree : Solved The Tribe : Unsolved Reverse integer : Solved Equal : Solved Divide the Cake : Solved Longest Palindromic Substring : Unsolved Maximum difference between two elements : Unsolved Color of the last ball II : Unsolved World Trips : Solved Going back to OS : Solved Gates of Heaven : Unsolved Measure Time by Hourglass : Solved Arrange Cubes : Solved Activity Selection : Unsolved Color of the last ball : Solved Genie and Hats : Solved First Repeating element : Unsolved Cats and a Square : Solved Thread : Unsolved One Mile on the Globe : Unsolved Maximum Depth : Solved Transpose File : Unsolved Measure Time by Burning Ropes : Unsolved LRU Cache : Unsolved EDIBLE STRINGS : Solved Activity Selection : Solved Make a Statement : Solved Minimum Difference Subsets! : Solved Two Numbers : Solved LONGEST COMMON SUBSTRING : Unsolved Helium Balloon : Solved 2 Sum : Solved Min Elevator Trips : Unsolved Flip Counter : Solved Minimum Number of Refueling Stops : Solved Helium Balloon : Unsolved Good Subarrays : Solved RECTANGLE SUM : Unsolved Marbles in Jar : Solved Number of sextuplets (or six values) th : Solved Diagonal Traversal : Unsolved Regular Expression Match : Unsolved Train Station : Solved Palindrome Partitioning II : Solved Excel Column Title : Unsolved Sum binary tree or not : Solved Implement StrStr : Solved Count Element Occurence : Solved Edit Distance : Solved Good Processor : Unsolved SUBTRACT : Solved Quarters on a Table : Solved Divisor Sequences : Solved Divide Gold Bar : Unsolved Sort List : Solved Meeting rooms : Solved Chain of Pairs : Solved Find Rectangle in binary matrix : Solved Maximum difference between two elements : Solved Next Number : Solved Gates of Heaven : Solved Ways to make array non decreasing : Unsolved Cross the Bridge II : Solved BALLS IN BOXES : Unsolved Binary Tree Paths : Unsolved Measure Milk by Cans : Solved World Trips : Unsolved Rook Movement : Unsolved Blindfolded Coin Toss : Unsolved Dinner Hand Shakes : Unsolved Blindfolded Coin Toss : Solved Region in BinaryMatrix : Unsolved NESTED_CMPL3 : Unsolved Celebrity Problem : Unsolved Six Colored Cubes : Unsolved Last Palindromic Date : Unsolved Last Palindromic Date : Solved Largest Number : Solved Next Number II : Unsolved Binary Tree Paths : Solved Paint House! : Solved Cats and a Square : Unsolved RECTANGLE SUM : Solved K reverse linked list : Unsolved Longest path in a subtree : Unsolved Bee Travel : Unsolved Remove Duplicate Letters : Solved LONGEST COMMON SUBSTRING : Solved Maximum Sum Triplet : Unsolved Reverse Alternate K Nodes : Unsolved Roads and Libraries : Unsolved Count Total Set Bits : Unsolved Count Permutations of BST : Solved City Tour : Solved Best Time to Buy and Sell Stock atmost : Solved Find the Defective Ball II : Unsolved Find a peak element : Solved One Mile on the Globe : Solved Palindromic Substrings Count : Solved Max Sum Contiguous Subarray : Solved EZPZ : Solved Deterministic Finite Automaton : Unsolved Deterministic Finite Automaton : Solved Scores : Solved Next Number II : Solved Different Bits Sum Pairwise : Unsolved PRETTYPRINT : Unsolved Painter's Partition Problem : Unsolved Byes : Unsolved Intersecting Chords in a Circle : Unsolved Partition List : Solved Distinct Initial Matrices : Solved Rook Movement : Solved Compare Version Numbers : Unsolved Large Factorial : Solved Cross the Bridge II : Unsolved Valid Number : Solved Minimum cost to connect cities : Unsolved BALLS IN BOXES : Solved Ants on a Triangle : Unsolved Chocolate Distribution : Solved Design Messenger : Unsolved Common Nodes in Two Binary Search Trees : Solved Celebrity Problem : Solved Equal Average Partition : Unsolved DEVICE CROSSOVER : Solved Remove Invalid Parentheses : Unsolved Burst Balloons : Unsolved Ways to make array non decreasing : Solved Max Min : Solved Minimum cost to connect cities : Solved Cross the Bridge : Unsolved Increasing SubArrays : Solved Leaders in an array : Solved Remove Invalid Parentheses : Solved Add Binary Strings : Solved Genie and Hats : Unsolved Sort List : Unsolved List Cycle : Solved Divide Gold Bar : Solved Burst Balloons : Solved Distinct Initial Matrices : Unsolved Shortest Path in Simple Graph : Unsolved Longest path in a subtree : Solved Design URL Shortener Subarray with equal occurences! : Unsolved 2-Sum Binary Tree : Unsolved Next Similar Number : Unsolved Dinner Hand Shakes : Solved Increasing SubArrays : Unsolved Get Mode Array Updates : Unsolved PRODDISC : Unsolved Min Jumps : Unsolved Min Jumps : Solved Transform CSV : Solved Reverse pairs : Unsolved Byes : Solved Root to Leaf Paths With Sum : Unsolved WoodCutting Made Easy! : Unsolved NEIGH : Unsolved Best Time to Buy and Sell Stocks III : Solved Power of 3 : Unsolved Max Chunks To Make Sorted : Solved Marbles in Jar : Unsolved Search in Bitonic Array! : Unsolved Gcd Ordering : Unsolved The Ghost Type : Unsolved Number of 1 Bits : Unsolved Next Number : Unsolved Build Identical Trees : Solved Profit Maximisation : Unsolved Tree coloring with three colors : Unsolved Equal Tree Partition : Unsolved Decode String : Unsolved Eggs and Building : Unsolved Largest BST Subtree : Unsolved Treasure Hunt : Solved Transform CSV : Unsolved Sorted Insert Position : Unsolved Min Stack : Solved IIFE : Solved Design Search Typeahead Grep : Solved Palindrome Pairs : Unsolved Profit Maximisation : Solved PRODDISC : Solved Min Sum Path in Matrix : Solved Ways to Decode : Unsolved Reverse the String : Unsolved Identical Binary Trees : Unsolved The Ghost Type : Solved Decode String : Solved Node distance C in binary tree : Unsolved Fraction : Unsolved Pattern Printing -2 : Unsolved ITS TIME FOR SOME DBMS : Unsolved Max Depth of Binary Tree : Unsolved Kingdom War : Unsolved Power of 3 : Solved Rain Water Trapped : Unsolved Min Sum Path in Triangle : Solved Flip Array : Solved Right view of Binary tree : Unsolved Magician and Chocolates : Unsolved Shortest Distance in a Maze : Unsolved Max Continuous Series of 1s : Solved Shortest Distance in a Maze : Solved Highly Consistent Database : Solved Ugly Pairs : Unsolved Tree coloring with three colors : Solved Search in a row wise and column wise so : Unsolved Rotate List : Unsolved Sum Of Fibonacci Numbers : Solved Node distance C in binary tree : Solved Combine Maximum : Solved LOOP_CMPL2 : Unsolved Remove Duplicates from Sorted List : Solved Deepu and girlfriend : Unsolved KEEP SWAPPING 2 : Unsolved Right view of Binary tree : Solved Sub-matrix Sum Queries : Unsolved FRUIT PACKETS : Unsolved Matrix Permutation : Unsolved Are they same - I : Solved Bus and Passenger : Unsolved Ugly Pairs : Solved Pattern Printing -2 : Solved Pretty Json : Solved Longest Subarray Difference : Solved Cut the rod : Unsolved Add Two Numbers as Lists : Unsolved Search for a Range : Unsolved Quarters on a Table : Unsolved Highly Available Database Word Break II : Solved Shortest Distance from All Buildings : Unsolved Minimum Cost to Hire K Workers : Unsolved Single Element in a Sorted Array : Solved Sub-matrix Sum Queries : Solved Measure Milk by Cans : Unsolved Max Rectangle in Binary Matrix : Solved Regular Expression Match : Solved Unique Paths in a Grid : Solved Bus and Passenger : Solved Total Moves For Bishop! : Unsolved Solve sub-sequences and return OR : Solved Design Twitter K reverse linked list : Solved Permutation Swaps! : Solved Longest Common Subsequence : Unsolved Grep Log : Solved NEIGH : Solved Time Based Key-Value Store : Unsolved Palindrome Pairs : Solved K DISTANCE : Unsolved Highly Consistent Database : Unsolved All Factors : Unsolved Sorted Array To Balanced BST : Unsolved Pattern Printing -1 : Unsolved Design Linked list : Unsolved Shortest Distance from All Buildings : Solved Bee Travel : Solved Word Ladder II : Solved EZPZ : Unsolved Color of the Bear : Unsolved Majority Element : Solved Count of rectangles with area less than : Solved Ratio of Boys and Girls : Solved Find subsequence : Unsolved Fastest Horses : Solved Min XOR value : Unsolved MIN MAX RIDDLE : Unsolved Kingdom War : Solved Hotel Reviews : Unsolved Prisoners and Poison : Unsolved LOOP_CMPL : Unsolved Sum of all Submatrices : Unsolved Left view of binary tree : Unsolved Simple Queries : Solved ADD OR NOT : Unsolved Length of longest consecutive ones : Solved NESTED_CMPL2 : Unsolved Numbers of length N and value less than : Solved Redundant Braces : Solved Grep Log : Unsolved LOOP_CMPL : Solved Deepu and girlfriend : Solved Pattern Printing -1 : Solved Sum of all Submatrices : Solved BST Iterator : Solved Path in Directed Graph : Unsolved Max Distance : Unsolved Next Permutation : Solved Consecutive Numbers Sum : Solved Rod Cutting : Solved Good Processor : Solved Permutation Swaps! : Unsolved WINNER NAME : Unsolved Shortest Path in Simple Graph : Solved Tenth Line : Unsolved ADD OR NOT : Solved Valid Sudoku : Unsolved Fake Note : Unsolved Excel Column Number : Solved Kth Smallest Element In Tree : Unsolved Justified Text : Solved Palindrome String : Unsolved Divisibility by 8 : Unsolved Consecutive Number Sum : Solved Count Right Triangles : Unsolved Preorder Traversal : Unsolved Design Cache : Solved Tenth Line : Solved Divide the Cake : Unsolved Smallest Subarray : Unsolved Reverse Bits : Solved N/3 Repeat Number : Solved Measure Time by Hourglass : Unsolved Sorted Insert Position : Solved REC_CMPL2 : Unsolved SUBTRACT : Unsolved Equal : Unsolved Longest Subarray Length : Unsolved Interleaving Strings : Solved Cousins in Binary Tree : Unsolved Accessibility : Solved Two out of Three : Solved Subsets II : Unsolved MIN MAX RIDDLE : Solved 132 Pattern : Unsolved Implement Power Function : Unsolved Subset : Solved Sum of minimum and maximum elements of : Unsolved Coins in a Line : Unsolved Min Sum Path in Matrix : Unsolved Divisibility by 8 : Solved Triplets with Sum between given range : Unsolved IIFE : Unsolved Compute nCr % m : Unsolved WINNER NAME : Solved Design Cache : Unsolved Rearrange the array : Unsolved Max Chunks To Make Sorted II : Unsolved LEFTOVER : Unsolved Minimum Parantheses! : Unsolved LEFTOVER : Solved All Unique Permutations : Unsolved Order them : Unsolved Substring Concatenation : Unsolved Accessibility : Unsolved Measure Time by Burning Ropes : Solved Sum of divisor of N factorial : Unsolved Kth Manhattan Distance Neighbourhood : Solved Evaluate Expression : Unsolved Matrix Search : Unsolved Length of Longest Subsequence : Solved Try some SQL : Unsolved Insertion Sort List : Unsolved Swap List Nodes in pairs : Unsolved Count Right Triangles : Solved Sort by Frequency : Unsolved Sharding a Database : Solved Find the Defective Ball : Unsolved Longest Common Prefix : Solved Sum Root to Leaf Numbers : Solved Compute nCr % m : Solved BST nodes in a range : Unsolved Water Flow : Solved Subarray Sum Equals K : Unsolved Count the primes : Unsolved Bulbs : Unsolved Parity Queries : Unsolved Black Shapes : Solved MinimiZe : Solved Ways to color a 3xN Board : Unsolved Shortest Unique Prefix : Unsolved Knight On Chess Board : Unsolved ITS TIME FOR SOME DBMS : Solved 132 Pattern : Solved Mod Sum : Unsolved Rearrange the array : Solved Prime Sum : Unsolved Best Time to Buy and Sell Stock with Co : Unsolved Single Number II : Unsolved Next Permutation : Unsolved Maximum array sum after B negations : Unsolved Level Order : Unsolved 3 Length Paths : Solved Remove the Substring : Unsolved Longest Subarray Difference : Unsolved Patch the tire : Solved Sum of pairwise Hamming Distance : Unsolved Highest Product : Unsolved Sharding a Database : Unsolved ODD SUM : Unsolved Single Number II : Solved Generate all Parentheses II : Solved Distinct Subsequences : Unsolved Minimum Paratheses! : Unsolved Ways to color a 3xN Board : Solved Stairs : Unsolved Train Station : Unsolved Order them : Solved Actors and their Movies : Solved Find the Defective Ball : Solved MODIFIED SEARCH : Unsolved Medicine Chest on a Boat : Solved Check two bracket expressions : Solved K DISTANCE : Solved Different Bits Sum Pairwise : Solved Maximum array sum after B negations : Solved Minimum Paratheses! : Solved JAVASCRIPT TAG : Solved Try some SQL : Solved Sum of divisor of N factorial : Solved Seats : Solved ODD SUM : Solved Power of 2 : Unsolved Something on IP's : Unsolved Best Time to Buy and Sell Stock with Co : Solved 100 People in a Circle : Solved Parity Queries : Solved Subarray Sum Equals K : Solved CHOOSE2 : Solved Design URL Shortener : Solved Compute nCr % p : Unsolved JAVASCRIPT TAG : Unsolved 3 Length Paths : Unsolved Minimum operations of given type to mak : Unsolved Mod Sum : Solved Binary Representation : Solved MinimiZe : Unsolved Word Ladder II : Unsolved The Sequence game : Solved Finding Position : Solved NUMRANGE : Unsolved Wizards and Drawves : Solved Remove Half Nodes : Solved NUMRANGE : Solved Design URL Shortener : Unsolved Colorful Number : Unsolved Maximum Rectangle : Unsolved Find duplicate rows in a binary matrix : Solved Prime Subarrays : Unsolved Prime Subarrays : Solved Next Greater Number BST : Solved Compute nCr % p : Solved Find subsequence : Solved Difference between odd and even level : Unsolved GREEDY PICK : Unsolved Dungeon Princess : Unsolved Light Switches in the Cellar : Unsolved Six Colored Cubes : Solved Convert the amount in number to words : Solved Majority Element : Unsolved Remove Punctuations : Solved Evaluate Expression To True : Unsolved Array and Prime Divisors : Unsolved MODIFIED SEARCH : Solved Simplify Directory Path : Solved Add Binary Strings : Unsolved Grep : Unsolved Smallest Subarray : Solved List Cycle : Unsolved Best Time to Buy and Sell Stock with Tr : Unsolved REMOVE DUPLICATES : Unsolved Rotated Arrays : Unsolved CHOOSE3 : Solved Breaking Chocolate Bars : Solved LRU Cache : Solved Starting indices of the substrings in s : Solved Into Blocks : Unsolved Balanced Brackets Queries : Unsolved Max Chunks To Make Sorted II : Solved 2-Sum Binary Tree : Solved Array and Prime Divisors : Solved Maximum Rectangle : Solved Random Attendance : Unsolved Matrix Permutation : Solved Chain of Pairs : Unsolved GREEDY PICK : Solved Largest Distance between nodes of a Tre : Solved REMOVE DUPLICATES : Solved Next Pointer Binary Tree : Unsolved Leaders in an array : Unsolved Inorder Traversal : Solved Common Nodes in Two Binary Search Trees : Unsolved Build Identical Trees : Unsolved Counting Triangles : Solved Remove K Digits : Unsolved Another chocolate game : Solved Longest Common Prefix II : Solved Something on IP's : Solved Difference between odd and even level : Solved Convert Integer To Roman Number : Solved Number of Squareful Arrays : Solved Into Blocks : Solved Jelly Beans Jars : Unsolved Delete Edge! : Solved Verify Prime : Solved Convert the amount in number to words : Unsolved Evaluate Expression To True : Solved Check Palindrome! : Unsolved Merge elements : Solved Sub Matrices with sum Zero : Unsolved TOP VIEW : Solved Best Time to Buy and Sell Stock with Tr : Solved Fake Note : Solved Make a Statement : Unsolved Window String : Unsolved Random Attendance : Solved Maximum Frequency stack : Unsolved Balanced Brackets Queries : Solved Diameter of Binary Tree : Unsolved Min Sum Path in Triangle : Unsolved Maximum Longest Common Subsequence : Unsolved Maximum Longest Common Subsequence : Solved MAXSPPROD : Solved Get Mode Array Updates : Solved Longest Common Prefix II : Unsolved Wave Array : Unsolved Remove K Digits : Solved Anagram Substring Search : Unsolved Vowels : Solved Recover Binary Search Tree : Solved Light Switches in the Cellar : Solved Rotated Arrays : Solved NEXTGREATER : Unsolved 4 Sum : Solved K-th character of decrypted string : Solved Order of People Heights : Unsolved Check Palindrome! : Solved Invert the Binary Tree : Unsolved Valid Ip Addresses : Solved Swap Forward And Backward Slash : Unsolved Reverse String : Unsolved Heater and Houses : Unsolved Path in Directed Graph : Solved Word Break : Unsolved Merge Two BSTs : Unsolved Construct Binary Tree From Inorder And : Solved First Scheduler : Unsolved Sort an array according to the order de : Unsolved Diameter of Binary Tree : Solved Permutations : Unsolved B XOR : Unsolved Pascal Triangle : Unsolved Anagram Substring Search : Solved Next Greater Number BST : Unsolved Remove Punctuations : Unsolved 100 People in a Circle : Unsolved Count of pairs with the given sum II : Unsolved Breaking Chocolate Bars : Unsolved Spider's Web : Solved Sliding Window Maximum : Unsolved Scores : Unsolved First non-repeating character in a stre : Solved Maximum Path in Triangle : Solved Remove Consecutive Characters : Solved Min Depth of Binary Tree : Solved Maximum coin in a tree : Unsolved Reverse Linked List : Solved Sort by Frequency : Solved Maximum Frequency stack : Solved Count the primes : Solved B XOR : Solved Single Number : Unsolved Merge K Sorted Lists : Unsolved Count of pairs with the given sum II : Solved Reduce the string : Unsolved The square game : Unsolved Sort an array according to the order de : Solved MATH_BUG01 : Unsolved Merge Two BSTs : Solved Aggressive cows : Solved Minimum Swaps 2 : Solved Reverse pairs : Solved Combination Sum II : Solved Find duplicate rows in a binary matrix : Unsolved REC_CMPL2 : Solved Three Numbers : Solved First Scheduler : Solved Heater and Houses : Solved Regular Expression II : Unsolved Convert Integer To Roman Number : Unsolved Remove Duplicates from Sorted List II : Unsolved Lines in a given range : Unsolved CHOOSE3 : Unsolved Postorder Traversal : Unsolved All Factors : Solved SUMMATION : Unsolved Min Cost Path : Solved SUMMATION : Solved Assign Mice to Holes : Solved Design Search Typeahead : Solved Unique Binary Search Trees : Solved Maximum Product Increasing Subsequence : Unsolved Leaf nodes from Preorder of a Binary Se : Unsolved Box Stacking Problem : Unsolved Check divisibility by 7 : Unsolved Delete Edge! : Unsolved The square game : Solved REVERSE OR NOT : Unsolved Smallest Good Base : Unsolved Kth Node From Middle : Unsolved Find Permutation : Unsolved CHOOSE2 : Unsolved Longest valid Parentheses : Solved Delete and Conquer : Unsolved Duplicates in binary tree : Solved Maximum coin in a tree : Solved Check divisibility by 7 : Solved Too Odd to be a Palindrome : Unsolved Longest Subarray Sum B : Unsolved Power of 2 : Solved In an array : Unsolved Generate all Parentheses : Solved Task Scheduler : Unsolved Word Ladder I : Unsolved Counting Triangles : Unsolved Simplify Directory Path : Unsolved Design Search Typeahead : Unsolved Median of stream of running integers : Solved Multiply Strings : Solved Rotate Matrix : Unsolved Count of paths in a grid : Solved Boundary Traversal Of Binary Tree : Unsolved Leaf nodes from Preorder of a Binary Se : Solved ZigZag Level Order Traversal BT : Solved Two Pills each day : Solved Merge Intervals : Solved LCA of array : Unsolved Too Odd to be a Palindrome : Solved Capture Regions on Board : Unsolved Tiling Problem : Unsolved Delete and Conquer : Solved Longest Increasing Subsequence : Solved Travelling Saleman Problem : Solved Paint House! : Unsolved Combinations : Solved Bob and Queries : Unsolved REVERSE OR NOT : Solved Palindrome Partitioning : Unsolved Number Of Open Doors : Solved Subarray with equal occurences! : Solved 3 Numbers : Unsolved Smallest Good Base : Solved Function : Unsolved Smallest XOR Queries : Unsolved Populate Next Right Pointers Tree : Unsolved Falling Squares : Solved Design Twitter : Solved Required Substrings : Unsolved Sub Matrices with sum Zero : Solved Maximum Area of Triangle! : Unsolved Min Steps in Infinite Grid : Unsolved Smallest Multiple With 0 and 1 : Solved Reduce the string : Solved Daughters' Ages : Unsolved Painter's Partition Problem : Solved Shortest common superstring : Unsolved Design Twitter : Unsolved Largest Rectangle in Histogram : Solved Intersection of Two Lines : Unsolved Subsets II : Solved Find sub-array with the given sum : Unsolved TOP VIEW : Unsolved Remove Duplicates from Sorted List II : Solved Maximum Product Increasing Subsequence : Solved Bob and Queries : Solved Merge K sorted arrays! : Unsolved 3 Numbers : Solved Sum of adjacent elements is always even : Unsolved Flatten Binary Tree to Linked List : Unsolved Reverse integer : Unsolved Longest Palindromic Substring : Solved Function : Solved B-th Smallest Prime Fraction : Unsolved Tiling Problem : Solved Very Hard Queries : Unsolved Maximum Sum Triplet : Solved Unique Binary Search Trees II : Unsolved Sliding Window Maximum : Solved Intersection of Two Lines : Solved Rotated Array : Solved In an array : Solved Carotenemia : Unsolved AMORTIZED1 : Unsolved Carotenemia : Solved Required Substrings : Solved Invert the Binary Tree : Solved Count of pairs with the given sum : Solved Smallest XOR Queries : Solved Maximum Sum Square SubMatrix : Solved Ways to form Max Heap : Solved Repeat and Missing Number Array : Solved Check if each internal node of a BST ha : Unsolved Largest Distance between nodes of a Tre : Unsolved Highly Available Database : Solved Triplets with Sum between given range : Solved Maximum level sum : Solved AMORTIZED2 : Solved Difference of Candies : Unsolved LCA of array : Solved Assign Mice to Holes : Unsolved Max Sum Path in Binary Tree : Unsolved Falling Dominoes : Solved Roads and Libraries : Solved Size three subsequences divisible by B : Solved Largest area of rectangle with permutat : Unsolved Highly Available Database : Unsolved CHOOSE4 : Solved Palindrome Partitioning : Solved Highly Consistent Database Minimum Bracket Reversals : Solved First Repeating element : Solved Unique Paths in a Grid : Unsolved Combination Sum II : Unsolved Merge K sorted arrays! : Solved N digit numbers with digit sum S : Solved Floyd Warshall Algorithm : Unsolved Difference between odd and even levels : Unsolved Design Linked list : Solved Two Pills each day : Unsolved Smallest sequence with given Primes : Solved Multiplication of previous and next : Unsolved Find sub-array with the given sum : Solved Produce the number : Unsolved Difference of Candies : Solved Minimum Absolute Difference : Solved Produce the number : Solved Array with consecutive elements : Solved Find the closest pair from two sorted a : Unsolved Smallest Missing Sum! : Unsolved Find Permutation : Solved REC_CMPL1 : Unsolved Diffk II : Solved Swap List Nodes in pairs : Solved Find nth Magic Number : Solved Multiplication of previous and next : Solved Sum of adjacent elements is always even : Solved Minimum swaps required to bring all ele : Unsolved Smaller or equal elements : Unsolved Row with maximum number of ones : Unsolved Vowel and Consonant Substrings! : Unsolved Elements which have at-least two greate : Unsolved Delete middle node of a Linked List : Unsolved Row with maximum number of ones : Solved Egg Drop Problem! : Solved Minimum Absolute Difference : Unsolved Infix to Postfix : Solved Floyd Warshall Algorithm : Solved Largest Permutation : Solved Path with good nodes! : Solved Move all zeroes to end of the array : Solved Disjoint Intervals : Solved Multiple left rotations of the array : Solved Length of longest palindromic list : Unsolved Grid Unique Paths : Unsolved Move all zeroes to end of the array : Unsolved Count Palindromic Subsequences : Unsolved Duplicates in binary tree : Unsolved Colorful Number : Solved Subarrays with distinct integers! : Solved Distribute in Circle! : Unsolved Find the closest pair from two sorted a : Solved Difference between odd and even levels : Solved Max Rectangle in Binary Matrix : Unsolved Remove Duplicate Letters : Unsolved String representation using its substri : Unsolved Find The Next : Unsolved Longest Consecutive Sequence in Binary : Solved Dijsktra : Unsolved Number of Squareful Arrays : Unsolved Unique Paths III : Unsolved Longest Pallindromic Subsequence : Unsolved Delete middle node of a Linked List : Solved Check if each internal node of a BST ha : Solved REC_CMPL3 : Unsolved FRUIT PACKETS : Solved Find a peak element : Unsolved Merge Two Sorted Arrays : Unsolved Swap Forward And Backward Slash : Solved Sum Of Fibonacci Numbers : Unsolved Min Elevator Trips : Solved Find nth Magic Number : Unsolved Smallest Missing Sum! : Solved Finding Position : Unsolved Steps to get out of complete binary tre : Solved INFINITE STRING : Unsolved 0/1 String : Unsolved Queen Attack : Unsolved BST nodes in a range : Solved WHILE_CMPL : Unsolved Palindrome Partitioning II : Unsolved Cows and snacks : Unsolved Dijsktra : Solved Day of the week : Unsolved Unique Paths III : Solved Inorder Traversal of Cartesian Tree : Solved Longest Pallindromic Subsequence : Solved Falling Dominoes : Unsolved Minimum Cost to Hire K Workers : Solved Detect and Remove Loop from a linked li : Unsolved B Closest Points to Origin : Solved Count of pairs with the given sum : Unsolved Number of Digit One : Unsolved Equal Tree Partition : Solved Deserialize Binary Tree : Unsolved Find if there is a sub-array with 0 sum : Solved Length of Last Word : Unsolved Median of Array : Solved Maximum height of the staircase : Unsolved Maximum height of the staircase : Solved Find if two rectangles overlap : Unsolved Find if two rectangles overlap : Solved Number Of Open Doors : Unsolved Number of Digit One : Solved Rectangle Area : Solved Greatest Common Divisor : Unsolved Inorder Traversal : Unsolved Vowel and Consonant Substrings! : Solved Count of divisors for multiple queries : Unsolved Count of divisors for multiple queries : Solved Product array puzzle : Unsolved Product array puzzle : Solved Valid BST from Preorder : Solved String representation using its substri : Solved Unreliable Rover : Unsolved DIVISIONS : Unsolved Count of smaller numbers after self : Solved Cows and snacks : Solved Count of Range Sum : Solved Maximum Difference : Unsolved Maximum Difference : Solved Inversion count in an array : Unsolved Next Similar Number : Solved Diffk : Unsolved Lightsabers : Unsolved Lightsabers : Solved Check two bracket expressions : Unsolved Preimage Size of Factorial Zeroes Funct : Unsolved Three Numbers : Unsolved Merge Two Sorted Arrays : Solved Min Depth of Binary Tree : Unsolved Length of longest palindromic list : Solved Balanced Parantheses! : Unsolved Find pairs in array whose sum is alread : Unsolved Find pairs in array whose sum is alread : Solved Count pairs in array whose sum is divis : Solved Subarray with B odd numbers : Unsolved Unreliable Rover : Solved Is given level order a BST? : Unsolved B-th Smallest Prime Fraction : Solved Detect and Remove Loop from a linked li : Solved Rotten Oranges : Unsolved Grid Illumination : Unsolved Grid Illumination : Solved INFINITE STRING : Solved Remove nodes from Path sum less than B : Unsolved Merge Intervals : Unsolved Reorder List : Unsolved Check if given Preorder, Inorder and Po : Unsolved Reverse Bits : Unsolved Stepping Numbers : Unsolved Count of smaller numbers after self : Unsolved Rotten Oranges : Solved Connect ropes with minimum length : Unsolved kth character in double decrypted strin : Unsolved Symmetric Binary Tree : Unsolved Check for BST with exactly one child of : Unsolved Preimage Size of Factorial Zeroes Funct : Solved kth character in double decrypted strin : Solved Deserialize Binary Tree : Solved Check for BST with exactly one child of : Solved Longest Common Pallindromic Subsequence : Unsolved Letter Phone : Solved N max pair combinations : Solved Remove nodes from Path sum less than B : Solved AMORTIZED1 : Solved Number of islands : Unsolved Trailing Zeros in Factorial : Unsolved Eggs and Building : Solved Pairs With Given Xor : Solved Vertical Order traversal of Binary Tree : Unsolved Ways to Decode : Solved Lexographically Greater Strings : Solved Commutable Islands : Solved Min Steps in Infinite Grid : Solved Balanced Parantheses! : Solved Increasing Path in Matrix : Solved Remove_k _ Digits : Unsolved SUBARRAY OR : Unsolved Is given level order a BST? : Solved H-index : Unsolved Max Product Subarray : Unsolved Connect ropes with minimum length : Solved Rotate Matrix : Solved Longest Subarray Sum B : Solved Minimise the maximum difference between : Unsolved Number of islands : Solved Minimum Swaps 2 : Unsolved Check if given Preorder, Inorder and Po : Solved Most Stones Removed : Solved FAMOUS PRODUCT : Unsolved Custom Sort String : Unsolved Longest Common Pallindromic Subsequence : Solved Kth Smallest Element In Tree : Solved Aggressive cows : Unsolved Max Continuous Series of 1s : Unsolved Rectangle Area : Unsolved Custom Sort String : Solved N integers containing only 1,2 and 3 : Solved Cycle in Directed Graph : Unsolved First negative integer in window size B : Unsolved First negative integer in window size B : Solved Reversing the first B elements of queue : Unsolved Reversing the first B elements of queue : Solved Most Stones Removed : Unsolved Count of Range Sum : Unsolved All Unique Permutations : Solved N integers containing only 1,2 and 3 : Unsolved Add One To Number : Unsolved Another Coin Problem : Unsolved Square Root of Integer : Unsolved FAMOUS PRODUCT : Solved Merge elements : Unsolved H-index : Solved Minimum Size Subarray Sum : Unsolved Minimum Size Subarray Sum : Solved Obsessive String : Unsolved Lines in a given range : Solved Min Jumps Array : Unsolved Print all root to leaf paths : Unsolved Ants on a Triangle : Solved Count of rectangles with area less than : Unsolved Allocate Books : Unsolved Distance of nearest cell having 1 in a : Unsolved REDUCTION : Unsolved ALL GCD : Solved Print all root to leaf paths : Solved Largest Continuous Sequence Zero Sum : Solved 3 Sum Zero : Unsolved Time Based Key-Value Store : Solved Ratio of Boys and Girls : Unsolved N/3 Repeat Number : Unsolved Max edge queries! : Solved Rat In a Maze : Unsolved Multiple left rotations of the array : Unsolved Median of Array : Unsolved ALL GCD : Unsolved Single Element in a Sorted Array : Unsolved Jesse and two string : Unsolved Obsessive String : Solved Rod Cutting : Unsolved Regular Expression II : Solved Subarray with given XOR : Unsolved Make it : Unsolved Color of the Bear : Solved Total Moves For Bishop! : Solved Two Strings : Solved Length of Longest Subsequence : Unsolved Diffk II : Unsolved Merge Two Sorted Lists : Unsolved Snake Ladder Problem! : Unsolved K Largest Elements : Solved Distance of nearest cell having 1 in a : Solved Day of the week : Solved Greatest Common Divisor : Solved Make it : Solved Monkeys and Doors : Solved Word Break : Solved Multiply Strings : Unsolved Tushar's Birthday Bombs : Solved Rat In a Maze : Solved Vertex Cover Problem : Unsolved Serialize Binary Tree : Unsolved Sum of minimum and maximum elements of : Solved Monkeys and Doors : Unsolved Minimum Weight Cycle in an Undirected w : Solved Strobogrammatic Number III : Unsolved Jesse and two string : Solved REDUCTION : Solved Find Duplicate in Array : Solved Minimum swaps required to bring all ele : Solved Sharding a Database Equal Average Partition : Solved Array with consecutive elements : Unsolved Left view of binary tree : Solved Valid Ip Addresses : Unsolved NESTED_CMPL : Unsolved Vertex Cover Problem : Solved Word Ladder I : Solved Kth Permutation Sequence : Solved Modular Expression : Solved Convert an arbitrary Binary Tree to a t : Unsolved Strobogrammatic Number III : Solved Serialize Binary Tree : Solved N max pair combinations : Unsolved Justified Text : Unsolved REC_CMPL1 : Solved B Closest Points to Origin : Unsolved Maximise the coins by popping balloons : Solved Intersection of Linked Lists : Solved Amazing Subarrays : Unsolved DIVISIONS : Solved LAST SUBSET PROBLEM : Unsolved LAST SUBSET PROBLEM : Solved Check whether the graph is bipartide or : Unsolved Longest Substring Without Repeat : Solved Minimum Weight Cycle in an Undirected w : Unsolved Fastest Horses : Unsolved Array 3 Pointers : Unsolved Count And Say : Solved Alternate positive and negative element : Solved N digit numbers with digit sum S : Unsolved Amazing Subarrays : Solved Gcd Ordering : Solved Nearest Smaller Element : Unsolved Smaller or equal elements : Solved Window String : Solved Reverse a stack using recursion : Unsolved Alternate Lower Upper Sort : Solved Path to Given Node : Unsolved Reverse Alternate K Nodes : Solved Trees and Sum of Distances : Unsolved ALL GCD PAIR : Unsolved Maximal String : Unsolved String count : Unsolved Shortest Distance in a graph with two d : Unsolved Check whether the graph is bipartide or : Solved KEEP SWAPPING 2 : Solved TRIPLET OF AND : Unsolved Wave Array : Solved Remove Duplicates from Sorted Array II : Unsolved Path Sum : Solved Maximum Consecutive Gap : Solved Subset Sum Problem! : Unsolved Intersecting Chords in a Circle : Solved Minimum Characters required to make a S : Unsolved Search in a row wise and column wise so : Solved MINIMIZE THE XOR : Solved Sum Root to Leaf Numbers : Unsolved Rotate List : Solved Strongly Connected Components : Unsolved Strongly Connected Components : Solved Bridges in a graph : Unsolved Bridges in a graph : Solved K Largest Elements : Unsolved String count : Solved Permutations : Solved Toeplitz Matrix : Unsolved Prisoners and Poison : Solved Trees and Sum of Distances : Solved Movie Character : Solved Substring Concatenation : Solved SUM OF SQUARES : Unsolved SUM OF SQUARES : Solved Longest Palindromic Subsequence : Unsolved FizzBuzz : Solved Gas Station : Unsolved Cross the Bridge : Solved Largest Coprime Divisor : Unsolved XOR TRIPLETS : Unsolved Actors and their Movies : Unsolved Minimum number of swaps required for ar : Solved INVERSIONS : Unsolved Neutral Reviewers : Solved Populate Next Right Pointers Tree : Solved ALL GCD PAIR : Solved Smallest Subtree with all the Deepest N : Unsolved Subarray with given XOR : Solved Smallest Subtree with all the Deepest N : Solved Cut the rod : Solved TRIPLET OF AND : Solved Steps to get out of complete binary tre : Unsolved Maximum Edge Removal : Unsolved Partitions : Solved Toeplitz Matrix : Solved Integer To Roman : Solved Travelling Saleman Problem : Unsolved Minimum number of swaps required for ar : Unsolved Kth Smallest Element in a Sorted Matri : Unsolved Maximum product of an increasing subseq : Solved ARRAY_BUG : Solved Reverse Link List Recursion : Unsolved Length of Longest Fibonacci Subsequence : Unsolved Length of Longest Fibonacci Subsequence : Solved Maximum Points on the same line : Solved Fraction : Solved Valid Binary Search Tree : Solved Matrix Chain Multiplication : Unsolved Matrix Chain Multiplication : Solved Russian Doll Envelopes : Unsolved Subset Sum Problem! : Solved Palindrome String : Solved Rearrange Array : Solved Distinct Primes : Unsolved 3 Sum Zero : Solved Max Chunks To Make Sorted : Unsolved Ath Magical Number : Unsolved Best Time to Buy and Sell Stocks I : Unsolved Kth Smallest Element in a Sorted Matri : Solved Disjoint Intervals : Unsolved Middle element of linked list : Unsolved Russian Doll Envelopes : Solved Max subset XOR : Unsolved Find The Next : Solved BST Iterator : Unsolved Vertical Order traversal of Binary Tree : Solved Longest Consecutive Sequence : Unsolved Maximum Edge Removal : Solved Roman To Integer : Unsolved Sorted Permutation Rank : Unsolved Divisor Sequences : Unsolved Box Stacking Problem : Solved Maximal String : Solved Count of paths in a grid : Unsolved Lexographically Greater Strings : Unsolved Palindromic Binary Representation : Unsolved Number of islands II : Solved 2 Sum : Unsolved Grid Unique Paths II : Unsolved Grid Unique Paths II : Solved Contiguous Array : Unsolved Contiguous Array : Solved Max subset XOR : Solved Palindromic Characteristics : Unsolved Number of islands II : Unsolved Merge Overlapping Intervals : Unsolved Maximum product of an increasing subse : Unsolved Length of longest consecutive ones : Unsolved XOR TRIPLETS : Solved Path to Given Node : Solved Least Common Ancestor : Solved Tushar's Birthday Party : Unsolved K-th character of decrypted string : Unsolved Reverse Linked List : Unsolved Valid phone number : Unsolved Ath Magical Number : Solved WoodCutting Made Easy! : Solved Pretty Json : Unsolved Meeting rooms : Unsolved Paranthesis Everywhere : Unsolved Atoi : Solved Birthday odddays : Unsolved Container With Most Water : Solved Another chocolate game : Unsolved Repeating Sub-Sequence : Unsolved WHILE_CMPL : Solved Median of stream of running integers : Unsolved 0-1 Knapsack : Unsolved Short Films : Unsolved Longest Consecutive Sequence : Solved Very Hard Queries : Solved Palindromic Characteristics : Solved Minimum Bracket Reversals : Unsolved Hotel Bookings Possible : Unsolved Count of coprimes in two array : Unsolved Solve sub-sequences and return OR : Unsolved Anagrams : Unsolved Minimum Parantheses! : Solved Binary Tree From Inorder And Postorder : Solved GCD_CMPL : Unsolved First non-repeating character in a stre : Unsolved Largest Continuous Sequence Zero Sum : Unsolved Least Common Ancestor : Unsolved Equilateral Triangles using Toothpicks : Unsolved Search for a Range : Solved Maximum product of an increasing subse : Solved Delete middle of the linked list : Unsolved Birthday odddays : Solved Prime Sum : Solved FizzBuzz : Unsolved Subset : Unsolved Maximum Sum Combinations : Unsolved Convert Sorted List to Binary Search Tr : Solved Probablity of knight inside chess board : Unsolved Maximise the coins by popping balloons : Unsolved Probablity of knight inside chess board : Solved Find if there is a sub-array with 0 sum : Unsolved Water Flow : Unsolved NQueens : Solved Middle element of linked list : Solved Knight On Chess Board : Solved Alice and Bob : Unsolved Minimum Lights to Activate : Solved Step by Step : Solved Recover Binary Search Tree : Unsolved Pick from both sides! : Solved CHOOSE1 : Unsolved Arrange II : Unsolved Remove Duplicates from Sorted Array : Solved Paranthesis Everywhere : Solved Single Number : Solved Snake Ladder Problem! : Solved Maximum Weight Edge Sum : Unsolved Invoiced Billing : Unsolved CHOOSE1 : Solved Count of coprimes in two array : Solved Maximum Weight Edge Sum : Solved PipeCUTS : Unsolved Delete middle of the linked list : Solved Gas Station : Solved AMORTIZED2 : Unsolved City Tour : Unsolved Arithmetic Subsequences : Unsolved Arithmetic Subsequences : Solved Alternate positive and negative element : Unsolved Distance between Nodes of BST : Unsolved Valid Path : Unsolved Longest Common Prefix : Unsolved Hotel Reviews : Solved Identical Binary Trees : Solved Count Total Set Bits : Solved Maximum Ones After Modification : Unsolved Commutable Islands : Unsolved Find Nth Fibonacci : Solved Coin Sum Infinite : Unsolved Text Justification : Solved Count Complete Tree Nodes : Unsolved Trailing Zeroes : Unsolved Consecutive Number Sum : Unsolved stream of B : Unsolved PipeCUTS : Solved Increasing Path in Matrix : Unsolved Integer To Roman : Unsolved Alice and Bob : Solved DEVICE CROSSOVER : Unsolved Invoiced Billing : Solved Gray Code : Solved Minimum operations of given type to mak : Solved Maximum Ones After Modification : Solved Patch the tire : Unsolved Maximum product of an increasing subseq : Unsolved Rust and his transfer : Solved Pair With Given Difference : Solved Longest Palindromic Subsequence : Solved Flip Counter : Unsolved Maximum Median : Solved Trailing Zeros in Factorial : Solved Largest Coprime Divisor : Solved Ticket Game : Unsolved Best Time to Buy and Sell Stock atmost : Unsolved Maximum Median : Unsolved Ticket Game : Solved Kth Manhattan Distance Neighbourhood : Unsolved Maximum Unsorted Subarray : Unsolved String Sum : Unsolved stream of B : Solved Symmetric Binary Tree : Solved Rust and his transfer : Unsolved Going back to OS : Unsolved Max edge queries! : Unsolved Scramble String : Solved Queen Attack : Solved Copy List : Unsolved Max Non Negative SubArray : Solved Minimise the maximum difference between : Solved Pair With Given Difference : Unsolved Gray Code : Unsolved Reverse String : Solved Maximum Path in Arrays : Unsolved ARRAY_IMPL1 : Unsolved Good Ranges : Unsolved Black Shapes : Unsolved Simple Queries : Unsolved Count Permutations of BST : Unsolved Magician and Chocolates : Solved Preorder Traversal : Solved MATH_BUG02 : Unsolved Count pairs in array whose sum is divis : Unsolved Step by Step : Unsolved Subarrays with distinct integers! : Unsolved Maximum Path in Arrays : Solved H-index II : Unsolved Unique Binary Search Trees II : Solved Maximum Points on the same line : Unsolved String Sum : Solved Distribute Candy : Unsolved Combine Maximum : Unsolved Scramble String : Unsolved Maximum product : Unsolved Max Distance : Solved Valid Binary Search Tree : Unsolved Excel Column Number : Unsolved Best Time to Buy and Sell Stocks III : Unsolved Job Sequencing : Unsolved H-index II : Solved Largest area of rectangle with permutat : Solved Wizards and Drawves : Unsolved MAXSPPROD : Unsolved Remove Nth Node from List End : Unsolved Balance Array : Unsolved Rotated Sorted Array Search : Unsolved Best Time to Buy and Sell Stocks II : Solved Set Matrix Zeros : Solved Add Two Numbers as Lists : Solved Max Sum Contiguous Subarray : Unsolved Min Stack : Unsolved Missing Element : Unsolved Distinct Numbers in Window : Unsolved Missing Element : Solved Maximum Absolute Difference : Unsolved Number of 1 Bits : Solved Consecutive Numbers Sum : Unsolved Find Nth Fibonacci : Unsolved Sort by Color : Solved Maximum product : Solved Maximum positivity : Unsolved Maximum Sum Combinations : Solved ARRAY_2D : Unsolved Longest Increasing Subsequence : Unsolved Capture Regions on Board : Solved Kth Row of Pascal's Triangle : Unsolved REC_CMPL3 : Solved Tushar's Birthday Bombs : Unsolved Postorder Traversal : Solved The Tribe : Solved Rain Water Trapped : Solved Kth Smallest Element in the Array : Unsolved Flip : Unsolved Min Jumps Array : Solved Root to Leaf Paths With Sum : Solved Inorder Traversal of Cartesian Tree : Unsolved Movie Character : Unsolved Maximum Intervals Overlap : Unsolved Remove_k _ Digits : Solved Zigzag String : Solved Largest BST Subtree : Solved Convert Sorted List to Binary Search Tr : Unsolved Power Of Two Integers : Solved Anti Diagonals : Solved Clone Graph : Unsolved Maximum positivity : Solved Minimum Lights to Activate : Unsolved Maximum level sum : Unsolved An Increment Problem : Solved Reverse the String : Solved Longest valid Parentheses : Unsolved Maximum Size Square Sub-matrix : Unsolved An Increment Problem : Unsolved Inversion count in an array : Solved Matrix Median : Unsolved Combination Sum : Solved Reverse Link List Recursion : Solved Maximum Intervals Overlap : Solved Largest Number : Unsolved Max Depth of Binary Tree : Solved Minimum Appends for Palindrome! : Solved Max Sum Without Adjacent Elements : Solved Dungeon Princess : Solved Diffk : Solved Reverse Subarray for Sorting : Unsolved Smallest sequence with given Primes : Unsolved MATH_BUG02 : Solved Next Smallest Palindrome! : Solved Remove Half Nodes : Unsolved Binary Representation : Unsolved Max Sum Path in Binary Tree : Solved MINIMIZE THE XOR : Unsolved Even Reverse : Unsolved Maximum Area of Triangle! : Solved Palindromic Binary Representation : Solved Numbers of length N and value less than : Unsolved NESTED_CMPL3 : Solved Design Cache Verify Prime : Unsolved Valid BST from Preorder : Unsolved Bulbs : Solved Next Smallest Palindrome! : Unsolved Minimize the absolute difference : Unsolved Is Rectangle? : Unsolved Spiral Order Matrix II : Solved Rotated Array : Unsolved Search in Bitonic Array! : Solved Max Min : Unsolved PRETTYPRINT : Solved NQueens : Unsolved Construct Binary Tree From Inorder And : Unsolved Path with good nodes! : Unsolved Minimize the absolute difference : Solved Word Search Board : Unsolved Reverse Subarray for Sorting : Solved Stringoholics : Unsolved Sort by Color : Unsolved Implement Power Function : Solved Design Messenger Copy List : Solved Valid Path : Solved Divide Integers : Unsolved Minimum Difference Subsets! : Unsolved Reverse Link List II : Solved Insertion Sort List : Solved Max Non Negative SubArray : Unsolved Kth Row of Pascal's Triangle : Solved Distribute in Circle! : Solved Reorder List : Solved NEXTGREATER : Solved Stringoholics : Solved Combination Sum : Unsolved Alternate Lower Upper Sort : Unsolved Sorted Permutation Rank : Solved Highest Product : Solved Maximum Sum Square SubMatrix : Unsolved Shortest common superstring : Solved Allocate Books : Solved Neutral Reviewers : Unsolved Anti Diagonals : Unsolved Prime Numbers : Unsolved Elements which have at-least two greate : Solved SUBARRAY OR : Solved Color of the last ball II : Solved Merge K Sorted Lists : Solved Word Break II : Unsolved Merge Two Sorted Lists : Solved Sort Binary Linked List : Unsolved Sum of pairwise Hamming Distance : Solved 0-1 Knapsack : Solved Remove the Substring : Solved Nearest Smaller Element : Solved Minimum Characters required to make a S : Solved Xor Between Two Arrays! : Unsolved Edit Distance : Unsolved XOR-ing the Subarrays! : Solved Noble Integer : Solved Merge two Binary Tree : Unsolved Atoi : Unsolved Valid Sudoku : Solved Sudoku : Unsolved Intersection of Linked Lists : Unsolved Best Time to Buy and Sell Stocks II : Unsolved Medicine Chest on a Boat : Unsolved Convert to Palindrome : Solved Jump Game Array : Solved Counting Subarrays! : Unsolved Perfect Peak of Array : Solved Trailing Zeroes : Solved Min Cost Path : Unsolved Text Justification : Unsolved Perfect Peak of Array : Unsolved Remove Nth Node from List End : Solved Reverse Level Order : Unsolved ZigZag Level Order Traversal BT : Unsolved Pascal Triangle : Solved First Missing Integer : Unsolved Sorted Array To Balanced BST : Solved Arrange Cubes : Unsolved 4 Sum : Unsolved Count And Say : Unsolved Spiral Order Matrix I : Unsolved Flip Array : Unsolved Large Factorial : Unsolved Sorted Permutation Rank with Repeats : Solved Max Product Subarray : Solved Cycle in Undirected Graph : Solved Counting Subarrays! : Solved Are they same - I : Unsolved Ways to form Max Heap : Unsolved Word Search Board : Solved Sorted Permutation Rank with Repeats : Unsolved Falling Squares : Unsolved Min XOR value : Solved Seats : Unsolved Reverse Level Order : Solved Roman To Integer : Solved Divide Integers : Solved Tiling With Dominoes : Solved Excel Column Title : Solved Remove Consecutive Characters : Unsolved Tiling With Dominoes : Unsolved Balanced Binary Tree : Unsolved Cycle in Undirected Graph : Unsolved Coin Sum Infinite : Solved Short Films : Solved Merge Overlapping Intervals : Solved Redundant Braces : Unsolved Distribute Candy : Solved Maximum Path in Triangle : Unsolved Longest Substring Without Repeat : Unsolved Balance Array : Solved Longest Consecutive Sequence in Binary : Unsolved Rearrange Array : Unsolved 3 Sum : Unsolved Noble Integer : Unsolved Spiral Order Matrix II : Unsolved Set Matrix Zeros : Unsolved Flatten Binary Tree to Linked List : Solved Count Palindromic Subsequences : Solved Remove Element from Array : Solved Palindrome Integer : Unsolved Smallest Multiple With 0 and 1 : Unsolved Infix to Postfix : Unsolved Tushar's Birthday Party : Solved Find Duplicate in Array : Unsolved Valid Number : Unsolved Points on the Straight Line : Unsolved 3 Sum : Solved Sort array with squares! : Unsolved Flip : Solved Length of Last Word : Solved Two Strings : Unsolved Maximum Size Square Sub-matrix : Solved Stepping Numbers : Solved Partitions : Unsolved Implement StrStr : Unsolved Cousins in Binary Tree : Solved Matrix Search : Solved Coins in a Line : Solved Special Integer : Unsolved Subarray with B odd numbers : Solved Reverse Link List II : Unsolved Hotel Bookings Possible : Solved Palindrome List : Unsolved Clone Graph : Solved Kth Permutation Sequence : Unsolved Binary Tree From Inorder And Postorder : Unsolved Kth Smallest Element in the Array : Solved Kth Node From Middle : Solved Intersection Of Sorted Arrays : Solved Burn a Tree : Solved GCD_CMPL : Solved Count Element Occurence : Unsolved Shortest Unique Prefix : Solved Arrange II : Solved Diagonal Traversal : Solved Intersection Of Sorted Arrays : Unsolved Generate all Parentheses II : Unsolved Next Pointer Binary Tree : Solved Longest Common Subsequence : Solved Evaluate Expression : Solved Remove Duplicates from Sorted Array : Unsolved Maximum Consecutive Gap : Unsolved Sort array with squares! : Solved Rotated Sorted Array Search : Solved Jump Game Array : Unsolved XOR-ing the Subarrays! : Unsolved Reverse a stack using recursion : Solved Path Sum : Unsolved Matrix Median : Solved Maximum Unsorted Subarray : Solved Square Root of Integer : Solved Interleaving Strings : Unsolved Remove Element from Array : Unsolved Palindrome List : Solved First Missing Integer : Solved Is Rectangle? : Solved Anagrams : Solved Grid Unique Paths : Solved Palindrome Integer : Solved Max Sum Without Adjacent Elements : Unsolved Longest Arithmetic Progression : Unsolved Spiral Order Matrix I : Solved INVERSIONS : Solved Generate all Parentheses : Unsolved Merge two Binary Tree : Solved Sort Binary Linked List : Solved Power Of Two Integers : Unsolved Region in BinaryMatrix : Solved Add One To Number : Solved Cycle in Directed Graph : Solved Repeating Sub-Sequence : Solved Partition List : Unsolved Largest Rectangle in Histogram : Unsolved Longest Arithmetic Progression : Solved Xor Between Two Arrays! : Solved Letter Phone : Unsolved Ten Black and White Socks : Solved Distinct Numbers in Window : Solved Merge Two Sorted Lists II : Solved Repeat and Missing Number Array : Unsolved Minimum Appends for Palindrome! : Unsolved Compare Version Numbers : Solved Remove Duplicates from Sorted List : Unsolved Possibility of finishing all courses gi : Solved