panini - 博客园

2017年3月3日

摘要：题目： Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 -> 2 -> 阅读全文

posted @ 2017-03-03 05:54 panini 阅读(109) 评论(0) 推荐(0)

235. Lowest Common Ancestor of a Binary Search Tree

摘要：题目： Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikip 阅读全文

posted @ 2017-03-03 04:52 panini 阅读(155) 评论(0) 推荐(0)

2017年3月1日

234. Palindrome Linked List

摘要：题目： Given a singly linked list, determine if it is a palindrome. Follow up:Could you do it in O(n) time and O(1) space? 链接： http://leetcode.com/proble 阅读全文

posted @ 2017-03-01 06:01 panini 阅读(165) 评论(0) 推荐(0)

232. Implement Queue using Stacks

摘要：题目： Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in f 阅读全文

posted @ 2017-03-01 05:28 panini 阅读(127) 评论(0) 推荐(0)

231. Power of Two

摘要：题目： Given an integer, write a function to determine if it is a power of two. 链接： http://leetcode.com/problems/power-of-two/ 2/28/2017 看别人的。看来要注意各种比特运算阅读全文

posted @ 2017-03-01 04:36 panini 阅读(97) 评论(0) 推荐(0)

226. Invert Binary Tree

摘要：题目： Invert a binary tree. to Trivia:This problem was inspired by this original tweet by Max Howell: 链接： http://leetcode.com/problems/invert-binary-tre 阅读全文

posted @ 2017-03-01 04:26 panini 阅读(118) 评论(0) 推荐(0)

2017年2月26日

225. Implement Stack using Queues

摘要：题目: Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack 阅读全文

posted @ 2017-02-26 07:17 panini 阅读(122) 评论(0) 推荐(0)

219. Contains Duplicate II

摘要：题目： Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and 阅读全文

posted @ 2017-02-26 06:41 panini 阅读(206) 评论(0) 推荐(0)

217. Contains Duplicate

摘要：题目： Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the 阅读全文

posted @ 2017-02-26 06:28 panini 阅读(114) 评论(0) 推荐(0)

206. Reverse Linked List

摘要：题目： Reverse a singly linked list. 链接： http://leetcode.com/problems/reverse-linked-list/ 2/25/2017, Java 之前的错误：看起来第一遍没有任何问题，但是1->2居然是time limit exceede 阅读全文

posted @ 2017-02-26 06:07 panini 阅读(167) 评论(0) 推荐(0)

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