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For循环-99乘法口诀

public static void main(String[] args) {        /**         * 99 乘法口诀         */        for (int i = 1; i <= 9; i++) {            for (int j = 1; j <= i; j++) {                System.out.print(j + "x" + i + "=" + i * j + " ");            }            System.out.println();        }    }

• 1x1=1
• 1x2=2 2x2=4
• 1x3=3 2x3=6 3x3=9
• 1x4=4 2x4=8 3x4=12 4x4=16
• 1x5=5 2x5=10 3x5=15 4x5=20 5x5=25
• 1x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36
• 1x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49
• 1x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64
• 1x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81

*           *       *     *     *     *    *        *        *     *  I Love Java  *       *           *             *     *                   *           1x1=1 1x2=2 2x2=4 1x3=3 2x3=6 3x3=9 1x4=4 2x4=8 3x4=12 4x4=16 1x5=5 2x5=10 3x5=15 4x5=20 5x5=25 1x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36 1x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49 1x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64 1x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81

package com.su.study.demo;public class OperatorsDemo {
       public static void main(String[] args) {        System.out.print(ILoveJava());        System.out.println();        /**         * 99 乘法口诀         */        for (int i = 1; i <= 9; i++) {            for (int j = 1; j <= i; j++) {                System.out.print(j + "x" + i + "=" + i * j + " ");            }            System.out.println();        }    }    public static String ILoveJava() {        int[] array = { 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 6, 4, 5, 2, 3, 7, 1, 0, 1,                0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };        StringBuffer sb = new StringBuffer();        for (int i = 0; i < array.length; i++) {            if (i % 7 == 0)                sb.append("  \n");            if (array[i] == 0)                sb.append("   ");            else if (array[i] == 4)                sb.append(" ");            else if (array[i] == 5)                sb.append(" I ");            else if (array[i] == 2)                sb.append("Love ");            else if (array[i] == 3)                sb.append("Java");            else if (array[i] == 6)                sb.append("   " + "*");            else if (array[i] == 7)                sb.append("");            else                sb.append("  " + "*");        }        return sb.toString();    }}

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