leetcode - 随笔分类(第3页) - bernieloveslife

136. Single Number

摘要：Given a non empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runti 阅读全文

posted @ 2018-11-30 15:19 bernieloveslife 阅读(98) 评论(0) 推荐(0)

100. Same Tree

摘要：Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally ident 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(90) 评论(0) 推荐(0)

152. Maximum Product Subarray

摘要：Given an integer array nums, find the contiguous subarray within an array (containing at least one number) which has the largest product. Example 1: I 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(75) 评论(0) 推荐(0)

151. Reverse Words in a String

摘要：Given an input string, reverse the string word by word. Example: Input: "the sky is blue", Output: "blue is sky the". Note: A word is defined as a seq 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(90) 评论(0) 推荐(0)

168. Excel Sheet Column Title

摘要：Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: 1 A 2 B 3 C ... 26 Z 27 AA 28 AB ... Example 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(84) 评论(0) 推荐(0)

273. Integer to English Words

摘要：Convert a non negative integer to its english words representation. Given input is guaranteed to be less than 231 1. Example 1: Input: 123 Output: "On 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(88) 评论(0) 推荐(0)

141. Linked List Cycle

摘要：Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? No extra space solution：阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(79) 评论(0) 推荐(0)

206. Reverse Linked List

摘要：Reverse a singly linked list. Example: Input: 1 2 3 4 5 NULL Output: 5 4 3 2 1 NULL Follow up: A linked list can be reversed either iteratively or rec 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(69) 评论(0) 推荐(0)

61. Rotate List

摘要：Given a linked list, rotate the list to the right by k places, where k is non negative. Example 1: Input: 1 2 3 4 5 NULL, k = 2 Output: 4 5 1 2 3 NULL 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(77) 评论(0) 推荐(0)

71. Simplify Path

摘要：Given an absolute path for a file (Unix style), simplify it. For example, path = "/home/", = "/home" path = "/a/./b/../../c/", = "/c" path = "/a/../.. 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(100) 评论(0) 推荐(0)

852. Peak Index in a Mountain Array

摘要：Let's call an array A a mountain if the following properties hold: A.length = 3 There exists some 0 A[i+1] ... A[A.length 1] Given an array that is de 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(93) 评论(0) 推荐(0)

461. Hamming Distance

摘要：The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Given two integers x and y, calcul 阅读全文

posted @ 2018-11-30 15:18 bernieloveslife 阅读(123) 评论(0) 推荐(0)

96. Unique Binary Search Trees

摘要：Given n, how many structurally unique BST's (binary search trees) that store values 1 ... n? Example: Input: 3 Output: 5 Explanation: Given n = 3, the 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(104) 评论(0) 推荐(0)

94. Binary Tree Inorder Traversal

摘要：Given a binary tree, return the inorder traversal of its nodes' values. Example: Input: [1,null,2,3] 1 \ 2 / 3 Output: [1,3,2] Follow up: Recursive so 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(62) 评论(0) 推荐(0)

110. Balanced Binary Tree

摘要：Example 1: Given the following tree [3,9,20,null,null,15,7]: Return true. Example 2: Given the following tree [1,2,2,3,3,null,null,4,4]: Return false. 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(89) 评论(0) 推荐(0)

595. Big Countries

posted @ 2018-11-30 15:17 bernieloveslife 阅读(95) 评论(0) 推荐(0)

720. Longest Word in Dictionary（important！！！about sort）

摘要：Given a list of strings words representing an English Dictionary, find the longest word in words that can be built one character at a time by other wo 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(112) 评论(0) 推荐(0)

27. Remove Element

摘要：Given an array nums and a value val, remove all instances of that value in place and return the new length. Do not allocate extra space for another ar 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(92) 评论(0) 推荐(0)

504. Base 7

摘要：Given an integer, return its base 7 string representation. Example 1: Input: 100 Output: "202" Example 2: Input: 7 Output: " 10" Note: The input will 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(89) 评论(0) 推荐(0)

202. Happy Number

摘要：Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive intege 阅读全文

posted @ 2018-11-30 15:17 bernieloveslife 阅读(84) 评论(0) 推荐(0)

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随笔分类 - leetcode

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