2017年2月21日
170. Two Sum III - Data structure design
摘要： 题目： Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure. 阅读全文
posted @ 2017-02-21 06:17 panini 阅读(168) 评论(0) 推荐(0)
169. Majority Element
摘要： 题目： Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that 阅读全文
posted @ 2017-02-21 01:24 panini 阅读(111) 评论(0) 推荐(0)
168. Excel Sheet Column Title
摘要： 题目： Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: 链接： http://leetcode.com/problems/excel-s 阅读全文
posted @ 2017-02-21 00:54 panini 阅读(130) 评论(0) 推荐(0)
2017年2月20日
167. Two Sum II - Input array is sorted
摘要： 题目： Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The func 阅读全文
posted @ 2017-02-20 11:53 panini 阅读(160) 评论(0) 推荐(0)
160. Intersection of Two Linked Lists
摘要： 题目： 链接： http://leetcode.com/problems/intersection-of-two-linked-lists/ 2/19/2017, Java 一开始的思路是，借用判断cycled linked list来。先从nodeA出发遍历，把最后一个node的next设为nod 阅读全文
posted @ 2017-02-20 11:27 panini 阅读(158) 评论(0) 推荐(0)
2017年2月19日
157. Read N Characters Given Read4
摘要： 题目： The API: int read4(char *buf) reads 4 characters at a time from a file. The return value is the actual number of characters read. For example, it 阅读全文
posted @ 2017-02-19 23:50 panini 阅读(200) 评论(0) 推荐(0)
155. Min Stack
摘要： 题目： Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- R 阅读全文
posted @ 2017-02-19 04:43 panini 阅读(138) 评论(0) 推荐(0)
141. Linked List Cycle
摘要： 题目: Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without using extra space? 链接： http://leetcode.com/problems/lin 阅读全文
posted @ 2017-02-19 04:06 panini 阅读(98) 评论(0) 推荐(0)
136. Single Number
摘要： 题目： Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime com 阅读全文
posted @ 2017-02-19 03:48 panini 阅读(109) 评论(0) 推荐(0)
2017年2月18日
122. Best Time to Buy and Sell Stock II
摘要： 题目： Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may co 阅读全文
posted @ 2017-02-18 23:59 panini 阅读(147) 评论(0) 推荐(0)