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<>Java案例:实现九九乘法表
<>前言
本篇文章主要讲述并实现Java实现九九乘法表。
<>一、九九乘法表?
九九乘法表就是咱们小学时期最开始接触乘法运算时,数字10以内,以及结果100以内的乘法口诀。
<>二、解题思路
* 因为涉及到行与列,而且均有 1 ~ 9这样的循环出现,因此首先想到的就是for循环,而且要出现两个
* 其次,因为九九乘法表每一行的等式左边的因数为等式的列,右边的因数为等式的行,同一行,右边的因数不变,所以for循环有嵌套关系
* 又因为左边的因数永远小于等于右边的因数,所以嵌套的for循环条件一定为上一级for循环的循环变量
* 确定输出的字符串的格式,保证效果美观
* 每一行输出完毕后,要保证有一个换行效果
题目分析完毕,开始代码实现部分。
<>三.代码实现
/* 案例题目: 1.打印九九乘法表 */ public class ForForNineTest { public static void main(
String[] args) { // 1.外层for循环 for(int i = 1; i <= 9; i++) { // 2.内层for循环 for(int
j= 1; j <= i; j++) { // 3.输出字符串条件表达式,以及计算结果的拼接字符串 System.out.print(j + "*" + i
+ "=" + (j * i) + " "); } // 4.每打印完一行内容后,进行换行操作 System.out.println(); } } }
<>四,测试结果
> java ForForNineTest 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
<>总结
以上就是今天要讲的内容,也许实现九九乘法表的方式含有很多,包括输出的格式如果用printf的格式转义符会更好,但我只是为了实现一个,展示一种思路,大家也可以多多去尝试不同的实现方法。