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全部文章（共243篇）

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

0 401

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

0 437

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

0 379

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

0 504

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

0 426

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

0 471

LeetCode: Weekly Contest 92

LeetCode: Weekly Contest 92 题解列表 1. LeetCode: 868. Transpose Matrix 题解第一题照例是签到题，根据矩阵的转置定义，行列互换。 2.LeetCode: 866. Smallest Subtree with all the D...

2018-07-08

0 438

LeetCode: 142. Linked List Cycle II

LeetCode: 142. Linked List Cycle II 题目描述 Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note: Do n...

:eetCode

2018-07-07

0 368

LeetCode: 141. Linked List Cycle

LeetCode: 141. Linked List Cycle 题目描述 Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space...

2018-07-06

0 532

LeetCode: 100. Same Tree

LeetCode: 100. Same Tree 题目描述 Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the sa...

2018-07-05

0 432