摘要：
class Solution { public static List<List<Integer>> threeSum(int[] nums) { List<List<Integer>> ans = new ArrayList(); int len = nums.length; if(nums == 阅读全文
摘要：
import java.util.*; public class Main{ public static void main(String [] args) { Scanner sc=new Scanner(System.in); while(sc.hasNext()) { char[] words 阅读全文