[Programmers] 문자열 뒤집기

https://school.programmers.co.kr/learn/courses/30/lessons/181905

프로그래머스

Algorithm

[s,e]구간을 reverse후 해당 구간을 기존문자열과 합치기

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Python

def solution(my_string, s, e):
    return my_string[:s]+my_string[s:e+1][::-1]+my_string[e+1:]

Java

class Solution {
    public String solution(String my_string, int s, int e) {
        StringBuilder answer = new StringBuilder(my_string.substring(s, e + 1));
        answer.reverse();
        return my_string.substring(0, s) + answer + my_string.substring(e + 1);
    }
}

class Solution {
    public String solution(String my_string, int s, int e) {

        char[] arr = my_string.toCharArray();
        while (s < e) {
            char temp = arr[s];
            arr[s++] = arr[e];
            arr[e--] = temp;
        }

        return new String(arr);
    }
}