# Leetcode Reverse String problem solution

In this Leetcode Reverse String problem solution, you need to write a function that reverses a string. The input string is given as an array of characters s.

## Problem solution in Python.

```class Solution:
def reverseString(self, s: List[str]) -> None:
"""
Do not return anything, modify s in-place instead.
"""
s[:]=s[::-1]
```

## Problem solution in Java.

```class Solution {
public void reverseString(char[] s) {
int left=0;
int right=s.length-1;
char temp;
while(left<right)
{
temp=s[left];
s[left]=s[right];
s[right]=temp;

left++;
right--;

}
}
}
```

## Problem solution in C++.

```class Solution {
public:
void reverseString(vector<char>& s) {
int left = 0;
int right = s.size() - 1;
while(left <= right){
swap(s[left],s[right]);
left++;
right--;
}
}
};
```

## Problem solution in C.

```char* reverseString(char* s) {
char * result = malloc((strlen(s)+1)*sizeof(char));
memset(result,'\0',(strlen(s)+1)*sizeof(char));
result += strlen(s)-1;
while(*s != '\0'){
*(result--) = *(s++);
}
result +=1;
return result;
}
```