26 Remove Duplicates from Sorted Array

class Solution {
    public int removeDuplicates(int[] nums) {
    	if (nums.length == 0)
    		return 0;
        int ans = 1;
        for (int i = 1; i < nums.length; i++) {
        	if (nums[i] != nums[ans - 1]) {
        		nums[ans] = nums[i];
        		ans++;
        	}
        }
        return ans;
    }
}