Java 循环嵌套打印九九乘法表及三角形

Java 循环嵌套

package base;

public class Mult {
    
    
    public static void main(String[] args) {
    
    
        //九九乘法表
        for (int i = 1; i <= 9; i++) {
    
          //列
            for (int j = 1; j <=i; j++) {
    
        //行
                System.out.print(i+"*"+j+"="+(i*j)+"\t");
            }
            System.out.println();
        }
        //流程控制 打印三角形
        for (int i = 1; i <=5; i++) {
    
    
            for (int j = 5; j >=i ; j--) {
    
    
                System.out.print("* ");
            }
            System.out.print("\n");
        }
        System.out.println("=========================");
        for (int i = 1; i <=5 ; i++) {
    
    
            for (int j = 1; j <=i ; j++) {
    
    
                System.out.print("* ");
            }
            System.out.print("\n");
        }
        System.out.println("=========================");
        for (int i = 1; i <=5 ; i++) {
    
    
            for (int j = 1; j <i ; j++) {
    
    
                System.out.print("* ");
            }
            System.out.print("\n");
        }
        System.out.println("=========================");
        for (int i = 1; i <=5; i++) {
    
    
            for (int j = 5; j >=i ; j--) {
    
    
                System.out.print(" ");
            }
            for (int j = 1; j <=i ; j++) {
    
    
                System.out.print("*");
            }
            for (int j = 1; j <i ; j++) {
    
    
                System.out.print("*");
            }
            System.out.print("\n");
        }
    }
}

xinyue Day2