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LeetCode

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全部文章 / LeetCode （共33篇）

LeetCode: 79. Word Search

LeetCode: 79. Word Search 题目描述 Given a 2D board and a word, find if the word exists in the grid. The word can be constructed from letters of sequen...

LeetCode

2018-03-04

0 338

LeetCode: 83. Remove Duplicates from Sorted List

LeetCode: 83. Remove Duplicates from Sorted List 题目描述 Given a sorted linked list, delete all duplicates such that each element appear only once. Fo...

LeetCode

2018-03-06

0 443

LeetCode: 88. Merge Sorted Array

LeetCode: 88. Merge Sorted Array 题目描述 Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note: You may a...

LeetCode

2018-03-14

0 381

LeetCode: 92. Reverse Linked List II

LeetCode: 92. Reverse Linked List II 题目描述 Reverse a linked list from position m to n. Do it in-place and in one-pass. For example: Given 1->2-&...

LeetCode

2018-03-18

0 474

LeetCode: 93. Restore IP Addresses

LeetCode: 93. Restore IP Addresses 题目描述 Given a string containing only digits, restore it by returning all possible valid IP address combinations. ...

LeetCode

2018-03-18

0 478

LeetCode: 94. Binary Tree Inorder Traversal

LeetCode: 94. Binary Tree Inorder Traversal 题目描述 Given a binary tree, return the inorder traversal of its nodes’ values. For example: Given binary...

LeetCode

2018-03-18

0 537

LeetCode: 95. Unique Binary Search Trees II

LeetCode: 95. Unique Binary Search Trees II 题目描述 Given an integer n, generate all structurally unique BST’s (binary search trees) that store values ...

leetcode

2018-03-19

0 514

LeetCode: 98. Validate Binary Search Tree

LeetCode: 98. Validate Binary Search Tree 题目描述 Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as...

LeetCode

2018-03-19

0 540

LeetCode: 99. Recover Binary Search Tree

LeetCode: 99. Recover Binary Search Tree 题目描述 Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing ...

LeetCode

2018-03-20

0 632

LeetCode: 101. Symmetric Tree

LeetCode: 101. Symmetric Tree 题目描述 Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this...

LeetCode

2018-03-21

0 367