简单。要细心。
package com.company; class Solution { public int removeDuplicates(int[] nums) { int cur = 0; for (int i=0; i<nums.length; i++) { if (i == 0 || nums[i] != nums[i-1]) { nums[cur] = nums[i]; cur++; } } return cur; } } public class Main { public static void main(String[] args) { System.out.println("Hello!"); Solution solution = new Solution(); int[] nums = {1,1,2}; int ret = solution.removeDuplicates(nums); System.out.printf("Get ret: %d ", ret); System.out.println(); } }