Jean

摘要： 题目：Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty sub... 阅读全文

摘要： 题目：Given an input string, reverse the string word by word.For example,Given s = "the sky is blue",... 阅读全文

摘要： 题目：Given an unsorted array of integers, find the length of the longest consecutive elements sequen... 阅读全文

摘要： 题目：Given a binary tree, find the maximum path sum.For this problem, a path is defined as any seque... 阅读全文

摘要： 题目：Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d ... 阅读全文

摘要： 题目：There are N children standing in a line. Each child is assigned a rating value.You are giving c... 阅读全文

摘要： 题目：Given an absolute path for a file (Unix-style), simplify it.For example,path = "/home/", => "/h... 阅读全文

摘要： 题目：Given n points on a 2D plane, find the maximum number of points that lie on the same straight l... 阅读全文

摘要： 题目：The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this:... 阅读全文

摘要： 题目：Given an array of integers, find two numbers such that they add up to a specific target number.... 阅读全文