摘要：
Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpo 阅读全文
摘要：
Implement regular expression matching with support for '.' and '*'. dp解法：膜 https://discuss.leetcode.com/topic/6183/my-concise-recursive-and-dp-solutio 阅读全文
摘要：
The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font 阅读全文