题目内容 Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. Note: For the purpose of this probl ...
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其他好文 时间：
2020-02-14 12:47:11
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1.复习代码 .复习代码 LC 322 322. Coin Change Medium 2970100Add to ListShare You are given coins of different denominations and a total amount of money amount. ...
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2020-02-14 10:53:04
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1 """ 2 We are given the head node root of a binary tree, where additionally every node's value is either a 0 or a 1. 3 Return the same tree where eve ...
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2020-02-13 22:59:44
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1 """ 2 Given a binary tree, return the inorder traversal of its nodes' values. 3 Example: 4 Input: [1,null,2,3] 5 1 6 \ 7 2 8 / 9 3 10 Output: [1,3,2 ...
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2020-02-13 22:54:06
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1 """ 2 Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the give ...
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2020-02-13 22:44:08
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1 """ 2 Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. 3 An example is the root-to-leaf path 1- ...
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2020-02-13 22:42:21
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1 """ 2 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. 3 According to the definition of LCA on Wikipedia: ...
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2020-02-13 22:33:56
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Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Op ...
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2020-02-13 21:05:49
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52
题目内容 Given a singly linked list, determine if it is a palindrome. Example: 分析过程 题目归类： 链表反转，fast/slow双指针法 题目分析： 这道题归到easy其实是不对的，应该归到medium，因为如果要考虑O(n)时 ...
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2020-02-13 15:00:47
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64
You are given two integer arrays nums1 and nums2 sorted in ascending order and an integer k. Define a pair (u,v) which consists of one element from th ...
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其他好文 时间：
2020-02-13 13:22:48
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