java 99乘法表

各种各样类型的99乘法表

1.要求

代码

package sc.Test;

public class Test5 {
    
    
    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)+"\t");
            }
            System.out.println("");
        }
    }
}

2要求
代码

package sc.Work;

public class Work5 {
    
    
    public static void main(String[] args) {
    
    
        for (int i = 1; i <=9 ; i++) {
    
    
            for (int j = 1; j <=10-i; j++) {
    
    
                System.out.print(i+"*"+j+"="+(i*j)+"\t");
            }
            System.out.println("\t");
        }
    }
}

3要求

代码

package sc.Test;

public class Test6 {
    
    
    public static void main(String[] args) {
    
    

        //最外围for控制打印层数
        for (int i = 1; i <=9 ; i++) {
    
    
            //里面第一个for打印控制前面的空格
            for (int j = 1; j < i ; j++) {
    
    
                System.out.print("\t\t");
            }
            //里面第二个for控制每行打印的个数
            for (int k = 10-i; k >=1 ; k--) {
    
    
                System.out.print(k+"*"+(10-i)+"="+k*(10-i)+"\t");
            }
            System.out.println("\t");
        }
    }
}

4要求
代码

package sc.Work;

public class Work4 {
    
    
    public static void main(String[] args) {
    
    
        for (int i = 1; i <=9 ; i++) {
    
    
            for (int k = 1; k <i ; k++) {
    
    
                System.out.print("\t");
            }
            for (int j = i; j <=9 ; j++) {
    
    
                System.out.print(i+"*"+j+"="+(i*j)+"\t");
            }
            System.out.println("\t");
        }
    }
}