LeetCode-Solutions-in-Cpp17

Solutions to high-frequency interview questions of LeetCode in C++17, taking into account both efficiency and comprehensibility.

---

Project maintained by downdemo Hosted on GitHub Pages — Theme by mattgraham

• 这就是 std::reverse 的功能

class Solution {
 public:
  void reverseString(vector<char>& s) { reverse(s.begin(), s.end()); }
};

• 不使用 STL 的解法如下

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