leetcode 344. 反转字符串 C语言

编写一个函数,其作用是将输入的字符串反转过来。输入字符串以字符数组 char[] 的形式给出。

不要给另外的数组分配额外的空间,你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。

你可以假设数组中的所有字符都是 ASCII 码表中的可打印字符。

 

示例 1:

输入:["h","e","l","l","o"]
输出:["o","l","l","e","h"]
示例 2:

输入:["H","a","n","n","a","h"]
输出:["h","a","n","n","a","H"]

void reverseString(char* s, int sSize)
{
    int left = 0;
    int right = sSize - 1;
    char temp;
    while (left < right) {
        temp = s[left];
        s[left] = s[right];
        s[right] = temp;
        left++;
        right--;
    }
}

 

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