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Java1:Chapter9

第九章 循环练习

public class *** {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int xy=0;
        System.out.println("请输入等腰三角形的行数:");
        xy = input.nextInt();
        for(int i=0;i<xy;i++){
            for(int x=0;x<xy-i;x++){
                System.out.print(" ");
            }
            for(int y=0;y<2*i+1;y++){
                System.out.print("*");
            }
            System.out.print("\n");
        }

    }

}


public class *** {
    public static void main(String[] args){
        int i=0;
        int j =0;
        int k =0;
        for(i=0;i<=20;i++){
            for(j=0;j<33;j++){
                k = 100-i-j;
                if(5*i+3*j+k/3==100){
                System.out.println("公鸡:"+i+"\t\t"+"母鸡:"+j+"\t\t"+"小 鸡:"+k);
                continue;
                }
            }
        }
    }
}

public class *** {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        boolean flag=false;
        int count=3;
        for(int i=0;i<3;i++){
            System.out.println("请输入密码:");
            int num=input.nextInt();
            if(num==111111){
                flag=true;
                break;
            }
            count--;
            System.out.println("您还有"+count+"次输入错误的机会。");
        }
        if(flag){
            System.out.println("请输入金额:");
            int money=input.nextInt();
            while(money%100!=0||money<0||money>1000){
                System.out.println("输入金额不合法,请重新输入:");
                money=input.nextInt();
            }
            System.out.println("取走了"+money+"");
        }else{
            System.out.println("输入错误超过3次,程序结束");
        }
        System.out.println("操作完成请取卡");
    }

}

 

Java1:Chapter9