Case: every seven days

Case: every seven days

public class HelloWorld{
    
    
    public static void main(String[] args){
    
    
        System.out.println("需要说过的数字有");
        for(int a = 1; a <= 100; a++){
    
    
            if(a%10 == 7||a/10%10 == 7||a%7 == 0){
    
    
                System.out.print(a);
                System.out.print(" ");
            }
        }
    }
}