[Programmers] Lv.0 / 수열과 구간 쿼리 3 / Java

문제

 

풀이

class Solution {
    public int[] solution(int[] arr, int[][] queries) {
        int temp;
        for(int i = 0; i < queries.length; i++) {
            temp = arr[queries[i][0]];
            arr[queries[i][0]] = arr[queries[i][1]];
            arr[queries[i][1]] = temp;
        }
        return arr;
    }
}

import java.util.Arrays;

class Solution {
    public int[] solution(int[] arr, int[][] queries) {
    
        int[] answer = Arrays.copyOf(arr, arr.length);

        for (int[] query : queries) {
            int i = query[0];
            int j = query[1];

            int temp = answer[i];
            answer[i] = answer[j];
            answer[j] = temp;
        }
        return answer;
    }
}

 

출처

https://school.programmers.co.kr/learn/courses/30/lessons/181924