最简单的方法来反转make变量中字符串的顺序

def reverse_string(s):
    return s[::-1]

function reverseString(s) {
    return s.split('').reverse().join('');
}

public String reverseString(String s) {
    StringBuilder sb = new StringBuilder(s);
    return sb.reverse().toString();
}

#include<algorithm>
#include<string>

std::string reverse_string(std::string s) {
    std::reverse(s.begin(), s.end());
    return s;
}

package main

import (
    "fmt"
    "strings"
)

func reverseString(s string) string {
    runes := []rune(s)
    for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
        runes[i], runes[j] = runes[j], runes[i]
    }
    return string(runes)
}