package com.wpf;

public class Multiplication {

//左上角  
	private static void left_top() {
		for(int i=1;i<=9;i++){
	    for(int j=1;j<=10-i;j++){
	    	System.out.print(i+"*"+j+"="+i*j+" ");					
		}
		System.out.println();
		}	
		System.out.print("   \n    ");	
	}
//左下角 
private static void left_bottom() {
	// TODO Auto-generated method stub
for(int i=1;i<=9;i++){
for(int j=1;j<=i;j++){
	System.out.print(i+"*"+j+"="+i*j+" ");
	
	
}
System.out.println();
}
System.out.print("   \n    ");	
}

//  右上角	
	private static void right_top() {
		for(int i=9;i>0;i--){
			for(int t=0;t<(9-i);t++)
				System.out.print("       ");
			for(int j=i;j>0;j--){
				if((i*j)/10<1){
					System.out.print(j+"*"+i+"="+(i*j)+"  ");
				}else{
					System.out.print(j+"*"+i+"="+(i*j)+" ");
				}
			}
			System.out.println();
			}
		System.out.print("   \n    ");	
		}		
	//右下角
	private static void right_bottom() {
		for(int i=1;i<10;i++){
			for(int t=0;t<(9-i);t++)
				System.out.print("       ");
			for(int j=i;j>0;j--){
				if((i*j)/10<1){
					System.out.print(j+"*"+i+"="+(i*j)+"  ");
				}else{
					System.out.print(j+"*"+i+"="+(i*j)+" ");
				}
			}
			System.out.println("");
		}
		System.out.print("   \n    ");			
	}
	public static void main(String[] args){
		left_top();
		left_bottom();
		right_top();
		right_bottom();		
	}
}