[백준] 16466번:콘서트 (Java 자바)

문제

https://www.acmicpc.net/problem/16466

16466번: 콘서트

 

 

풀이 및 소스코드

import java.io.*;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {

	public static void main(String[] args) throws IOException   {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st;
		
		int n = Integer.parseInt(br.readLine());
		int[] arr = new int[n];
		st = new StringTokenizer(br.readLine());
		for(int i=0;i<n;i++) {
			arr[i] = Integer.parseInt(st.nextToken());
		}
		Arrays.sort(arr);
		int cnt = 0;
		for(int i=0;i<n;i++) {
			if (arr[i]!=i+1) {
				System.out.println(i+1);
				cnt ++ ;
				break;
			}
		}
		if (cnt == 0) {
			System.out.println(n+1);
		}
	}
}