摘要： https://leetcode.com/problems/the-skyline-problem/description/ A city's skyline is the outer contour of the silhouette formed by all the buildings in 阅读全文

摘要： Given a string s, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can f 阅读全文

摘要： https://leetcode.com/problems/word-search-ii/description/ Given a 2D board and a list of words from the dictionary, find all words in the board. Each 阅读全文

摘要： Given a string s, partition s such that every substring of the partition is a palindrome. Return the minimum cuts needed for a palindrome partitioning 阅读全文

摘要： Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k num 阅读全文

摘要： Given s1, s2, s3, find whether s3 is formed by the interleaving of s1 and s2. Example 1: Example 2: 思路 可以遍历s1和s2所能构成的所有可能的interlaving string。 We start 阅读全文

摘要： Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing only 1's and return its area. Example: 思路 看了下discussion，真的很难理解 阅读全文

摘要： 1. Minimum Window Substring Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n 阅读全文

摘要： 1. N-Queens The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, 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