Python

#
# 反转字符串
# @param str string字符串 
# @return string字符串
#
class Solution:
    def solve(self , str ):
        # write code here
        return str[::-1]

C

/**
 * 反转字符串
 * @param str string字符串 
 * @return string字符串
 */


char* solve(char* str ) {
    // write code here
    int j=strlen(str)-1;
    int i=0;
    char temp;
    while(i<j)
    {
        temp=str[i];
        str[i]=str[j];
        str[j]=temp;
        i++;
        j--;
    }
    return str;
}