Remove Element

Given an array and a value, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. The order of elements can be changed. It doesn’t matter what you leave beyond the new length.

Example: Given nums = [3,2,2,3], val = 3, Your function should return length = 2, with the first two elements of nums being 2.

Remove Element Solution

class RemoveElement {
    public int removeElement(int[] nums, int val) {
        int index = 0;
        for(int i = 0; i < nums.length; i++) {
            if(nums[i] != val) {
                nums[index++] = nums[i];
            }
        }

        return index;
    }
}