Given weights and values of n items, put these items in a knapsack of capacity W to get...
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IP属地：上海
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0/1背包和多重背包问题 -
A general method for substring problems
Given a binary string of length N and an integer K, we need to find out how many substr...
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关于“经常调用怎么办”这类的follow up
Reverse bits of a given 32 bits unsigned integer.Example:Input: 43261596Output: 9641761...
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Union-Find
261. Graph Valid Tree Given n nodes labeled from 0 to n-1 and a list of undirected edge...
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Backtracking
A general approach to backtracking questions in Java (Subsets, Permutations, Combinatio...
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In order traversal
99. Recover Binary Search Tree Two elements of a binary search tree (BST) are swapped b...
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Disjoint Set Union (DSU) structure
Sentence Similarity II Given two sentences words1, words2 (each represented as an array...
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Binary search tree
Contains Duplicate III Given an array of integers, find out whether there are two disti...
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Find if share common letters
Maximum Product of Word Lengths Given a string array words, find the maximum value of l...
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2 Pointers
2 Pointers Given n non-negative integers representing an elevation map where the width ...
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Merge Sort
Sort List Sort a linked list in O(n log n) time using constant space complexity.Example...
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浅谈Rxjava（二）
上一篇中讲了Rxjava的基本使用，这篇来讲一下Rxjava的一些高级操作 一.Rxjava中的变换 RxJava 提供了对事件序列进行变换的支持，这是它的核心功能之一，也是...
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用Robotium对android进行自动化测试的探索
一.简介 Robotium是一款国外的Android自动化测试框架，主要针对Android平台的应用进行黑盒自动化测试，它提供了模拟各种手势操作（点击、长按、滑动等）、查找和...