Day 064-Remove Duplicates from Sorted Array

// https://leetcode.com/problems/remove-duplicates-from-sorted-array/


class Solution {
    public int removeDuplicates(int[] arr) {
        int j  = 1;
        for(int i = 1  ; i < arr.length ; ){
            if(arr[i-1] != arr[i]) arr[j++] = arr[i++];
            else i++;
        }
            return j;
    }
}