Java for循环打印九九乘法表

//第四章 5.2 打印九九乘法表//提示 使用双层循环，内循环次数是当前外层循环的循环变量值。public class test {public static void main(String[] args) {for (int i = 1; i <= 9; i++) {for (int j = 9 - i; j > 0; j--) {System.out.print("      ");}for (int j = 1; j <= i; j++) {if (j <= i) {System.out.print(" "+i + "X" + j + "=" + i * j + "\t");}}System.out.println("");}}}