InterviewBit Problems   First Missing Integer : Unsolved

About the First Missing Integer : Unsolved category (1)
Most Lightweight solution in c++ (3)
Getting TLE for O(n) solution (1)
Python-3, can someone tell me why this code isn't working? (3)
Sorting can help u (1)
Python with some comments (1)
Java O(n) solution with constant space (2)
What is wrong in this solution it's accepting all the given inputs (2)
As simple as that o(1) space (2)
O(1) space o(n) time cpp solution (7)
What is meant by constant space? (3)
Whats wrong with the code (3)
What's the fault in this soln? For the test case mentioned below, acc to me the ans should be 4 but the correct answer given is 1. How? (2)
Time Limit Exceeded on Python (1)
Java O(N) with O(1)space (1)
Easiest Solution O(n) (2)
Getting wrong answer. can someone please debug (5)
[Exception is throwing : Invalid Pointer] Even though code is properly running in debug mode (1)
Can anyone tell me what goes wrong? (1)
Time Limited Exceeded (4)
The best Solution in java (2)
Code working on VS Code but giving error on interview bit compiler (1)
Why i am getting WA . Can somebody plz tell (1)
What I am doing wrong here? (1)
Easy cpp code ...very very easy to understand (6)
Here's the simplest solution (1)
Simple Approach...Showing WA (2)
Problem with test case - JS solution works in local with all test cases (1)
Getting partial correct answer, and that my solution could be failing for larger test cases (1)
Easiest method O(n) and O(1) time (1)