Java Program to find duplicate elements in array - 3 ways to compare time/space complexity Solution 1 : Our first solution is very simple. All we are doing here is to loop over an array and comparing ...

/** Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The order of the elements may be changed. Then return the number of elements in nums which are not ...

Sometimes we may face a situation when we need to remove objects from an array while iterating through the same array. we cannot remove elements from the same array on which we are fast enumerating ...