目录链接:
力扣编程题-解法汇总_分享+记录-CSDN博客
GitHub同步刷题项目:
https://github.com/September26/java-algorithms
原题链接:力扣
描述:
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 s
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。
示例 1:
输入:s = ["h","e","l","l","o"] 输出:["o","l","l","e","h"]
示例 2:
输入:s = ["H","a","n","n","a","h"] 输出:["h","a","n","n","a","H"]
提示:
1 <= s.length <= 105
s[i]
都是 ASCII 码表中的可打印字符
解题思路:
/**
* 344. 反转字符串
* 解题思路:
* 从前向后遍历s,如果i的位置和s.size()-i-1的位置不相同,则对调位置
*
*/
代码:
class Solution344
{
public:void reverseString(vector<char> &s){for (int i = 0; i < s.size(); i++){if (i < s.size() - 1 - i){char c = s[i];s[i] = s[s.size() - 1 - i];s[s.size() - 1 - i] = c;continue;}break;}}
};