|
马上注册,结交更多好友,享用更多功能^_^
您需要 登录 才可以下载或查看,没有账号?立即注册
x
本帖最后由 瓜瓜咚 于 2020-11-30 16:44 编辑
- #include <iostream>
- #include <vector>
- #include <utility>
- #include <string>
- using namespace std;
- pair<int, int> expandAroundCenter(const string& s, int left, int right) {
- while (left >=0 && right < s.size() && s[left] == s[right]) {
- --left;
- ++right;
- }
- return {left + 1, right - 1};
- }
- string longestPalindrome(string s) {
- int start = 0, end = 0;
- // int left1, left2, right1, right2;
- for (int i = 0; i < s.size(); ++i) {
- auto [left1, right1] = expandAroundCenter(s, i, i);
- auto [left2, right2] = expandAroundCenter(s, i, i + 1);
- if (right1 - left1 > end - start) {
- start = left1;
- end = right1;
- }
- if (right2 - left2 > end - start) {
- start = left2;
- end = right2;
- }
- }
- return s.substr(start, end - start + 1);
- }
复制代码
在longestPalindrome函数中auto [left1, right1]和auto [left2, right2]这两句话显示left1, left2, right1, right2未定义,求助大佬这个地方应该怎么用? |
|