摘要：class ForDemo4{ //九九乘法表 public static void main(String[] args) { for(int i =1; i <= 9; i++){ for (int j = 1; j<=i; j++){ System.out.print(j+"*"+i+"="+ 阅读全文

摘要：public class sanjiaoxing { //打印三角形 public static void main(String[] args) { for (int i = 0; i <= 5; i++) { for(int j = 5;j>=i;j--){ System.out.print(" 阅读全文

摘要：public class MaoPaoDemo { public static void main(String[] args) { int [] num = {2,3,10,9,7}; int temp = 0; /* 冒泡排序 */ for(int i = 0; i < num.length; 阅读全文

摘要：import java.util.*;import java.util.stream.Collectors;public class QuChong { public static void main(String[] args) { List<Integer> list = new ArrayLi 阅读全文