[SWEA] 지명 선수

 

 

[문제]

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AZU2weVqkoPHBIRK

SW Expert Academy

 

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Solution {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st;
		int T = Integer.parseInt(br.readLine());
		for(int tc=1;tc<=T;tc++) {
			int n = Integer.parseInt(br.readLine());
			int[] a = new int[n];
			int[] b = new int[n];
			st = new StringTokenizer(br.readLine());
			for(int i=0;i<n;i++) {
				a[i] = Integer.parseInt(st.nextToken());
			}
			st = new StringTokenizer(br.readLine());
			for(int i=0;i<n;i++) {
				b[i] = Integer.parseInt(st.nextToken());
			}
			boolean[] visit = new boolean[n+1];
			int[] select = new int[n+1];
			int cnt = 0;
			while(cnt<n) {
				for(int i=0;i<n;i++) {
					if(!visit[a[i]]) {
						visit[a[i]] = true;
						select[a[i]] = 1;
						cnt++;
						break;
					}
				}
				for(int i=0;i<n;i++) {
					if(!visit[b[i]]) {
						visit[b[i]] = true;
						select[b[i]] = 2;
						cnt++;
						break;
					}
				}
			}
			String result = "";
			for(int i=1;i<=n;i++) {
				if(select[i]==1) result += "A";
				else result += "B";
			}
			System.out.println(result);
		}
	}
}