二重循环

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打印九九乘法表

1 * 1 = 1 
1 * 2 = 2 2 * 2 = 4
1 * 3 = 3 2 * 3 = 6   3 * 3 = 9
1 * 4 = 4 2 * 4 = 8   3 * 4 = 12 4 * 4 = 16
1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81

public class dy{
    public static void main(String[] args){
        int rows = 9;
        for(int i = 0; i <= rows; i++){
            for(int j = 1; j <= i; j++){
                System.out.print(j + " * " + i + " = " + j * i + "\t");
            }
            System.out.print("\n");
        }
    }
}

代码示例如下

二重循环

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原文地址：http://www.cnblogs.com/daixiumei/p/6921632.html