[백준 2164] 카드2 (Java)

문제

https://www.acmicpc.net/problem/2164

풀이

큐를 사용하면 되겠다!

 

Java Code

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.Queue;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());

        Queue<Integer> queue = new LinkedList<>();
        for (int i = 1; i <= n; i++) {
            queue.add(i);
        }

        while (queue.size() > 1) {
            queue.remove();
            if(queue.isEmpty()) break;
            int top = queue.poll();
            queue.add(top);
        }
        System.out.println(queue.peek());
    }

}