Remove Duplicates from Sorted Array.

removeDuplicatesFromSortedArray.ts

function removeDuplicates(nums: number[]): number {
    if (nums.length == 0) return 0;
    
    let current = 0;
    for (let index = 0; index <= nums.length - 1; index++){
        if (nums[current] !== nums[index]){
            current++;
            nums[current] = nums[index]
        }
    }
    
    return current + 1;
};