//출처:프로그래머스,
//https://school.programmers.co.kr/learn/courses/30/lessons/181924?language=java


class Solution {
    public int[] solution(int[] arr, int[][] queries) {
        for(int[] change: queries){
            int i = change[0];
            int j = change[1];
            int fir = arr[i];
            int sec = arr[j];
            arr[i] = sec;
            arr[j] = fir;
        }
        
        return arr;
    }
}