Removed Duplicates from Sorted Array

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

Do not allocate extra space for another array, you must do this in place with constant memory.

For example,
Given input array nums = [1,1,2],

Your function should return length = 2, with the first two elements of nums being 1 and 2 respectively. It doesn't matter what you leave beyond the new length.

代码如下：

public class RemoveDuplicatesfromSortedArray {public int removeDuplicates(int[] nums){if(nums.length < 2)return nums.length;int id = 1;for(int i=1; i<nums.length;i++){if(nums[i] != nums[i-1])//当前数和前一个数不一样则保存，否则处理下一个数nums[id++] = nums[i];}return id;}}