Question

JAVA输出99乘法表

Answer 1

public class MultiplicationTable {

public static void main(String[] args) {

for (int i = 1 ; i <= 9 ; i++){

for (int j = 1 ; j <= i ; j++){

System.out.print(i + "*" + j + "=" + i * j + " ");

}

System.out.println();

}

}

}

执行效果一：

1*1=1

2*1=2 2*2=4

3*1=3 3*2=6 3*3=9

4*1=4 4*2=8 4*3=12 4*4=16

5*1=5 5*2=10 5*3=15 5*4=20 5*5=25

6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36

7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49

8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64

9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
倒置的九九乘法表
public class ResupinateMultiplicationTable {

public static void main(String[] args) {

for (int i = 9 ; i >= 1 ; i--){

for (int j = i ; j >= 1 ; j--) {

System.out.print(i + "*" + j + "=" + i * j + " ");

}

System.out.println();

}

}

}

执行效果二：

9*9=81 9*8=72 9*7=63 9*6=54 9*5=45 9*4=36 9*3=27 9*2=18 9*1=9

8*8=64 8*7=56 8*6=48 8*5=40 8*4=32 8*3=24 8*2=16 8*1=8

7*7=49 7*6=42 7*5=35 7*4=28 7*3=21 7*2=14 7*1=7

6*6=36 6*5=30 6*4=24 6*3=18 6*2=12 6*1=6

5*5=25 5*4=20 5*3=15 5*2=10 5*1=5

4*4=16 4*3=12 4*2=8 4*1=4

3*3=9 3*2=6 3*1=3

2*2=4 2*1=2

1*1=1

Answer 2

public class ChengFa {
public static void main(String[] args) {
for(int i = 1; i <=9; i++) {
for (int j = 1; j <=i; j++) {
System.out.format("%1$d*%2$d=%3$2d ",j,i,i*j);
}
System.out.println("");
}
}
}

Answer 3

两个for的：
public final class two_for {

/**
* @param args
*/
public static void main(String[] args) {
for (int i = 1; i <= 9; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j + "*" + i + "=" + i * j + "\t@");
}
System.out.println();
}

}

}
............................
一个for的：
import java.awt.Font;
import java.awt.TextArea;

import javax.swing.JFrame;

public final class one_for extends JFrame {

/**
*
*/
private static final long serialVersionUID = 1L;

/**
* @param args
*/
TextArea textArea = new TextArea();

one_for() {
super("0.0");

this.add(textArea);
nine();
// textArea.setEditable(false);// 设置不可编辑
textArea.setEnabled(false);// 设置的是不可用
textArea.setFont(new Font("", Font.LAYOUT_RIGHT_TO_LEFT, 15));
this.setResizable(false);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(920, 210);
}

public void nine() {
for (int i = 1, j = 1; i <= 9; j++) {
textArea.append(j + "*" + i + "=" + j * i + " \t&");
if (i == j) {
i++;
j = 0;
textArea.append("\n");
}

}
}

public static void main(String[] args) {
new one_for();
}
}

Answer 4

public class ChenFaBiao {
public static void main(String[] args){
new JS_ChenFaBiao().JiSuan();
}
}
class JS_ChenFaBiao{
public void JiSuan(){
for(int i=1;i<=9;i++){
for(int j=1;j<=i;j++){
int temp=0;
temp=j*i;
System.out.print(j+"*"+i+"="+temp+" ");
}
System.out.println("");
}
}
}

Answer 5

public class ChengFa {
public static void main(String[] args) {
for(int i = 1; i <=9; i++) {
for (int j = 1; j <=i; j++) {
System.out.format("%1$d*%2$d=%3$2d ",j,i,i*j);
}
System.out.println("");
}
}
}