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Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longestpath between any two nodes in a tree. This path may or may no...

Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome.Example 1:Input: "aba"Output: TrueExample 2:Input: "abca"Output: TrueExplanation: You c...

Say you have an array for which the ith element is the price of a given stock on day i.If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), des...

Given two binary strings, return their sum (also a binary string).For example,a = "11"b = "1"Return "100".关键词：对列表中的元素进行类型转换并连接时间自由度：O（n）# 2016-03-27 294 tests, 64 msclass Solution(object): def a...

Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.For example, given nums = [0, 1, 0, 3, 12], after calling your func...

Given a binary tree, return all root-to-leaf paths.For example, given the following binary tree: 1 / \2 3 \ 5All root-to-leaf paths are:["1->2->5", "1->3"]关键词：二叉树，节点类型时间自由度：O（nlo...

You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the...

Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution, and you may not use the same el...

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Panama" is a palindrome."race a car" is not a palindro...