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全部文章（共268篇）

LeetCode: 147. Insertion Sort List

LeetCode: 147. Insertion Sort List 题目描述 Sort a linked list using insertion sort. A graphical example of insertion sort. The partial sorted list (...

2018-07-13

0 496

LeetCode： 146. LRU Cache

LeetCode： 146. LRU Cache 题目描述 Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:...

2018-07-12

0 507

LeeCode: 3. Longest Substring Without Repeating Characters

LeeCode: 3. Longest Substring Without Repeating Characters 题目描述 Given a string, find the length of the longest substring without repeating character...

2018-07-11

0 416

LeetCode: 145. Binary Tree Postorder Traversal

LeetCode: 145. Binary Tree Postorder Traversal 题目描述 Given a binary tree, return the postorder traversal of its nodes’ values. Example: Input: [1,n...

2018-07-11

0 369

LeetCode: 865. Shortest Path to Get All Keys

LeetCode: 865. Shortest Path to Get All Keys 题目描述 We are given a 2-dimensional grid. "." is an empty cell, "#" is a wall,"@...

2018-07-10

0 396

LeeCode:144. Binary Tree Preorder Traversal

LeeCode:144. Binary Tree Preorder Traversal 题目描述 Given a binary tree, return the preorder traversal of its nodes’ values. Example: Input: [1,null,...

2018-07-10

0 430

LeetCode: 143. Reorder List

LeetCode: 143. Reorder List 题目描述 Given a singly linked list L: L0→L1→…→Ln-1→Ln, reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→… You may not modify the valu...

2018-07-09

0 373

LeetCode: 867. Prime Palindrome

LeetCode: 867. Prime Palindrome 题目描述 Find the smallest prime palindrome greater than or equal to N. Recall that a number is prime if it’s only divi...

2018-07-08

0 502

LeetCode: 866. Smallest Subtree with all the Deepest Nodes

LeetCode: 866. Smallest Subtree with all the Deepest Nodes 题目描述 Given a binary tree rooted at root, the depth of each node is the shortest distance ...

2018-07-08

0 419

LeetCode: 868. Transpose Matrix

LeetCode: 868. Transpose Matrix 题目描述 Given a matrix A, return the transpose of A. The transpose of a matrix is the matrix flipped over it’s main di...

2018-07-08

0 468