import java.util.ArrayList; import java.util.Iterator; public class StringSampleDemo { public static void main(String[] args) { ArrayList al = new ArrayList(); al.add(new Student("zhangsan1", 20, "男")); al.add(new Student("zhangsa
using System;using System.Collections;using System.Collections.Generic;using System.Text; namespace ArrayList集合排序{ class Program { struct Player { public string name; public int mark; }
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Typ
package com.swift.lianxi; import java.util.HashSet; import java.util.Random; /*训练知识点:HashSet 训练描述 双色球规则:双色球每注投注号码由6个红色球号码和1个蓝色球号码组成. 红色球号码从1—33中选择:蓝色球号码从1—16中选择.请随机生成一注双色球号码*/ public class Test4 { public static void main(String[] args) { Random ran =
1.List<Integer>排序 List<Integer> list = new ArrayList<>();list.add(50);list.add(25);list.add(25);list.add(98);list.add(32);List<Integer> collect = list.stream().distinct().sorted().collect(Collectors.toList());System.out.println(&qu
ArrayList 元素 //目录条目类 public class FolderItem { public string filename; public string filetype; public int size; public int number; public FolderItem(string filename, string filetype, int size, int number) { this.filename = filename; this.filetype = f