Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length.

RemoveDuplicates.cs

public class Solution {
    
    public int RemoveDuplicates(int[] nums) {
        int len = nums.Length;
        
        if(len == 0 || len == 1){
            return len;
        }
        int j = 0;
        int i=1;
        while(i<len){
            if(nums[i]>nums[j]){
                j++;
                nums[j] = nums[i];
            }
            i++;
        }
        return j+1;
    }
}