摘要：最长回文，谁能解释一下下面这个解法？ Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example 1: Inpu 阅读全文

摘要：Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. 阅读全文

摘要：Question 1: How to find middle element of linked list in one pass? Question 1: How to find middle element of linked list in one pass? One of the most 阅读全文

摘要：What are Divide and Conquer algorithms? Describe how they work. Can you give any common examples of the types of problems where this approach might be 阅读全文

摘要：Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that the 阅读全文