题解 | 约瑟夫环

import java.util.Scanner;

import java.util.ArrayList;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt() , k = in.nextInt() , m = in.nextInt();
        ArrayList<Integer> a = new ArrayList<>();

        for(int i = 0 ; i < n ; i++){
            a.add(i);
        }

        while(a.size() > 1){
            k = (k + m - 1) % a.size();
            a.remove(k);
        }
        System.out.print(a.get(0));
    }
}