Yu's Garden

Google 面试题：Java实现用最大堆和最小堆查找中位数 Find median with min heap and max heap in Java

摘要： Google面试题股市上一个股票的价格从开市开始是不停的变化的，需要开发一个系统，给定一个股票，它能实时显示从开市到当前时间的这个股票的价格的中位数（中值）。SOLUTION 1:1.维持两个heap,一个是最小堆，一个是最大堆。2.一直使maxHeap的size大于minHeap.3. 当两边si... 阅读全文

posted @ 2015-01-23 08:12 Yu's Garden 阅读(4225) 评论(0) 推荐(0) 编辑

LeetCode: Largest Number 解题报告以及Comparator, CompareTo 应用

摘要： Largest NumberGiven a list of non negative integers, arrange them such that they form the largest number.For example, given [3, 30, 34, 5, 9], the lar... 阅读全文

posted @ 2015-01-20 09:47 Yu's Garden 阅读(5028) 评论(0) 推荐(1) 编辑

LeetCode: Permutation Sequence 解题报告

摘要： PermutationSequence https://oj.leetcode.com/problems/permutation-sequence/The set [1,2,3,…,n] contains a total of n! unique permutations.By listing a... 阅读全文

posted @ 2015-01-14 18:03 Yu's Garden 阅读(1330) 评论(0) 推荐(0) 编辑

LeetCode: Next Permutation 解题报告

摘要： Next PermutationImplement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrangemen... 阅读全文

posted @ 2015-01-13 17:58 Yu's Garden 阅读(965) 评论(0) 推荐(0) 编辑

LeetCode: Subsets 解题报告

摘要： SubsetsGiven a set of distinct integers, S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set mus... 阅读全文

posted @ 2015-01-08 20:05 Yu's Garden 阅读(9931) 评论(1) 推荐(0) 编辑

LeetCode: Recover Binary Search Tree 解题报告

摘要： Recover Binary Search TreeTwo elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A sol... 阅读全文

posted @ 2015-01-07 14:06 Yu's Garden 阅读(2674) 评论(0) 推荐(0) 编辑

LeetCode: Find Peak Element 解题报告

摘要： Find Peak ElementA peak element is an element that is greater than its neighbors.Given an input array wherenum[i] ≠ num[i+1], find a peak element and ... 阅读全文

posted @ 2015-01-05 01:55 Yu's Garden 阅读(945) 评论(0) 推荐(0) 编辑

LeetCode: Valid Parentheses 解题报告

摘要： Valid ParenthesesGiven a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must clos... 阅读全文

posted @ 2015-01-04 21:49 Yu's Garden 阅读(653) 评论(0) 推荐(0) 编辑

LeetCode: First Missing Positive 解题报告

摘要： First Missing PositiveGiven an unsorted integer array, find the first missing positive integer.For example,Given[1,2,0]return3,and[3,4,-1,1]return2.Yo... 阅读全文

posted @ 2015-01-03 22:45 Yu's Garden 阅读(5247) 评论(4) 推荐(0) 编辑

LeetCode: Best Time to Buy and Sell Stock III 解题报告

摘要： Best Time to Buy and Sell Stock IIIQuestion SolutionSay you have an array for which the ith element is the price of a given stock on day i.Design an a... 阅读全文

posted @ 2015-01-03 18:51 Yu's Garden 阅读(792) 评论(0) 推荐(0) 编辑

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