InterviewBit Problems   Interleaving Strings : Solved

Solution using sort() function (4)
Passes all cases without DP, java recursive solution (1)
Solved using LCS (Python 3) :) (1)
LCS variation - just 4 line different (2)
Easy peasy code without DP! (1)
Interleaving Solution using DP and Memoization with O(n^3) time complexity (1)
Cpp solution with few lines (1)
Cpp simple dp recursive solution (1)
Solution without dp, O(a+b) (1)
My cpp solution easy (1)
Java DP recursive approach (1)
Solution without DP O(nlogn) and O(1) (4)
Didn't use DP still got all test cases pass. though the algo is recursive (1)
Simple and sweet solution (1)
Solution with O(n) using memoization (1)
Interleaving Strings DP solution (1)
Why does this not work (1)
Wrong testcases! (1)
Is this solution correct and optimal? Seems to be only O(Len(s3)). Is DP solution better than this? (1)
Can be easily solve using map (2)
No Time Complexity Check (1)
Problem with compiler/Editor (1)
Python checker is wrong..same code for cpp gives correct result..I just lost 100 (3)