class Solution {
public String solution(String my_string, int[][] queries) {
char[] arr = my_string.toCharArray();
for(int[] query : queries){
// 2,3
int s = query[0]; // 2 -> r
int e = query[1]; // 3 -> m
while(s<e){ //2<3
char temp = arr[s]; //char temp = arr[2]; -> temp == r
arr[s] = arr[e]; // arr[2] = arr[3]; arr[2] == m
arr[e] = temp; // arr[3] = temp arr[3] == r
s++; // 3
e--; // 2
// 처음 while문 탈출
}
}
return new String(arr);
}
}