杨领well

LeetCode

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全部文章 / LeetCode （共151篇）

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

0 372

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...

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2018-07-07

0 366

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

0 527

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

0 428

LeetCode: 96. Unique Binary Search Trees

LeetCode: 96. Unique Binary Search Trees 题目描述 Given n, how many structurally unique BST’s (binary search trees) that store values 1 … n? Example: ...

2018-07-05

0 426

LeetCode: 104. Maximum Depth of Binary Tree

LeetCode: 104. Maximum Depth of Binary Tree 题目描述 Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the lo...

2018-07-05

0 417

LeetCode: 140. Word Break II

LeetCode: 140. Word Break II 题目描述 Given a non-empty string s and a dictionary wordDict containing a list of non-empty words, add spaces in s to cons...

2018-07-05

0 403

LeetCode: 2. Add Two Numbers

LeetCode: 2. Add Two Numbers 题目描述 You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse ...

2018-07-04

0 458

LeetCode: 1. Two Sum

LeetCode: 1. Two Sum 后面会补上之前刷过却没写题解的题目。题目描述 Given an array of integers, return indices of the two numbers such that they add up to a specific...

2018-07-04

0 389

LeetCode: 139. Word Break

LeetCode: 139. Word Break 题目描述 Given a non-empty string s and a dictionary wordDict containing a list of non-empty words, determine if s can be segm...

2018-07-04

0 485