Remove Duplicates from Sorted Array Solutions in Java

// Source : https://leetcode.com/problems/remove-duplicates-from-sorted-array/description/
// Author : Tianming Cao
// Date   : 2018-02-02


package removeDuplicatesFromSortedArray;

public class RemoveDuplicatesFromSortedArray {
	public int removeDuplicates(int[] nums) {
		if (nums == null || nums.length == 0) {
			return 0;
		}
		int n = nums.length;
		int len = 0;
		for (int i = 1; i < n; i++) {
			if (nums[i] != nums[len]) {
				nums[len + 1] = nums[i];
				len++;
			}
		}
		return len + 1;
	}
}