26.remove-duplicates-from-sorted-array.java

public class Solution {
    public int removeDuplicates(int[] nums) {
	if(nums.length<2) return nums.length;
	int j=0;
	for(int i=1; i<nums.length; i++){
		if(nums[i]!=nums[j]){
			j++;
			nums[j]=nums[i];
		}
	}
	return j+1;
   }
}