344-Reverse-String

Posted 2020-07-09 Lee

 

Problem:

Write a function that takes a string as input and returns the string reversed.

Example:
Given s = "hello", return "olleh".

 

One possible Solution:

char* reverseString(char* s) {
    int i,j,k;
    char c;
    k=0;
    while(*(s+k)!=‘\0‘)
       k++;
    for(i=0,j=k-1;i<=j;i++,j++){
             c=*(s+i);
        *(s+i)=*(s+j);
        *(s+j)=c;
    }
    return s;
}

Puzzle:

I have successfully runed the program on my Laptop Computer with gcc4.8.4 in Ubuntu14.04.1 environment. However, the Leetcode website reports "RUNTIME ERROR" 。

Does anyone know the reason?