问题 1047: C语言程序设计教程（第三版）课后习题10.5

import java.util.Scanner;

public class Prog1047 {

public static void main(String[] args) throws Exception {

Scanner scan = new Scanner(System.in);

int n = scan.nextInt();

int arr[] = new int[n];

int m = 0;

loop: for (;;) {

for (int j = 0; j < n; j++) {

if (arr[j] == 0) {

m++;

}

if (m % 3 == 0) {

arr[j] = 1;

m = 0;

}

int s = 0;

for (int k = 0; k < arr.length; k++) {

if (arr[k] == 0)

s++;

}

if (s == 1) {

for (int k = 0; k < arr.length; k++) {

if (arr[k] == 0) {

System.out.println(k + 1);

break loop;

}

}

}

}

}

}

}