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(164) 评论(0) 推荐(0) 编辑
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(102) 评论(0) 推荐(0) 编辑
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(124) 评论(0) 推荐(0) 编辑
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(154) 评论(0) 推荐(0) 编辑
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(150) 评论(0) 推荐(0) 编辑
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(195) 评论(0) 推荐(0) 编辑
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(130) 评论(0) 推荐(0) 编辑
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(89) 评论(0) 推荐(0) 编辑
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(103) 评论(0) 推荐(0) 编辑
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(141) 评论(0) 推荐(0) 编辑