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标题：Swap Nodes in Pairs通过率:32.5难度：中等Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should retu... 阅读全文
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标题：Construct Binary Tree from Preorder and Inorder Traversal通过率：26.5难度： 中等Given preorder and inorder traversal of a tree, construct the binary tree.No... 阅读全文
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标题：Number of 1 Bits通过率：40.0%难度： 简单Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming ... 阅读全文
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标题：Reverse Words in a String通过率： 14.8% 难度： 中等Given an input string, reverse the string word by word.For example,Given s = "the sky is blue",return "... 阅读全文
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标题：Add Two Numbers通过率：22.6%难度：中等You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each ... 阅读全文
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标题：Reverse Bits通过率：27.6%难度：简单Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as0000001010010... 阅读全文
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标题：Edit Distance通过率：26.1%难度：难Given two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counte... 阅读全文
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标题：Rotate Image通过率：31.7%难度：中等You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this... 阅读全文
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标题：Spiral Matrix通过率：20.8%难度：中等Given a matrix ofmxnelements (mrows,ncolumns), return all elements of the matrix in spiral order.For example,Given the f... 阅读全文
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标题：Sort Colors通过率：32.5%难度：中等Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the... 阅读全文