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Download VTK 6.3.0Download Qt 5.4 with MinGW 4.9.1Download CMake 3.2.0I assume you've already installed Qt 5.4 with MinGW 4.9.1 and CMake 3.2.0 correc... 阅读全文
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11.2 Write a method to sort an array of strings so that all the anagrams are next to each other.这道题让我们给一个字符串数组排序，让所有的变位词Anagrams排在一起，关于变位词，LeetCode里有两... 阅读全文
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11.1 You are given two sorted arrays, A and B, where A has a large enough buffer at the end to hold B. Write a method to merge B into A in sorted orde... 阅读全文
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Matlab中，我们有时候要删除矩阵中的某行某列，可以采用下列方法进行删除：a = [1 2 34 5 67 8 9];a(2,:) = []; % Delete row 2a(:,2) = []; % Delete col 2 阅读全文
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10.7 Imagine a web server for a simplified search engine. This system has 100 machines to respond to search queries, which may then call out using pro... 阅读全文
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You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 ston 阅读全文
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使用C++的unordered_map类型时，我们经常要根据关键字查找，并移除一组映射，在Java中直接用remove即可，而STL中居然没有实现remove这个函数，还要自己写循环来查找要删除项，然后用erase来清除，我也是醉了，参见下面代码：vector v1;// remove A *a1f... 阅读全文
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Implement a trie with insert, search, and startsWith methods.Have you met this question in a real interview?ExampleNoteYou may assume that all inputs ... 阅读全文
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10.6 You have 10 billion URLs. How do you detect the duplicate documents? In this case, assume that "duplicate" means that the URLs are identical.这道题让... 阅读全文
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1. Accelerated 35. Empowered 69. Motivated 2. Accomplished 36. Enabled 70. Negotiated 3. Achieved 37. Encouraged 71. Obtained 4. Acted 38. Engineered 阅读全文
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10.5 If you were designing a web crawler, how would you avoid getting into infinite loops?这道题问如果让我们设计一个网络爬虫，怎么样才能避免进入无限循环。那么何谓无限循环呢，如果我们将网络看做一个图Graph，... 阅读全文
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10.4 You have an array with all the numbers from 1 to N, where N is at most 32,000. The array may have duplicate entries and you do not know what N is... 阅读全文
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在C++中，我们有时候需要拆分字符串，比如字符串string str = "dog cat cat dog"想以空格区分拆成四个单词，Java中实在太方便了，直接String[] v = str.split(" ");就搞定了，而c++中没有这么方便的实现，但也有很多的方法能实现这个功能，下面列出五... 阅读全文
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Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a lette 阅读全文
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10.3 Given an input file with four billion non-negative integers, provide an algorithm to generate an integer which is not contained in the file. Assu... 阅读全文
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According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John 阅读全文
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10.2 How would you design the data structures for a very large social network like Facebook or Linkedln? Describe how you would design an algorithm to... 阅读全文
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10.1 Imagine you are building some sort of service that will be called by up to 1000 client applications to get simple end-of-day stock price informat... 阅读全文
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9.11 Given a boolean expression consisting of the symbols 0,1, &, |, and ^, and a desired boolean result value result, implement a function to count t... 阅读全文
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9.10 You have a stack of n boxes, with widths w., heights hir and depths drThe boxes cannot be rotated and can only be stacked on top of one another i... 阅读全文
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在C++编程中，有时候要求我们把数据保留小数点后几位，或是保留多少位有效数字等等，那么就要用到setiosflags和setprecision函数，记得要包含头文件#include ，请参考下面的示例：#include #include // Need this using namespac... 阅读全文
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9.9 Write an algorithm to print all ways of arranging eight queens on an 8x8 chess board so that none of them share the same row, column or diagonal. ... 阅读全文
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Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. There is only one repeated number in nu 阅读全文
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C++的STL中提供了很强大的排序函数sort，可以对任意数组，结构体及类进行排序，下面我们先来看最简单的数组排序。默认的升序排列，我们也可以在后面加上less或greater来告诉编译器我们想要的排序顺序。 vector<int> v = {2, 0, 1, 5, 9, 2, 7}; // Asc 阅读全文
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DescriptionIn the city, there is a one-way straight highway starts from the northern end, traverses the whole city southward, and finishes at the sout... 阅读全文
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9.8 Given an infinite number of quarters (25 cents), dimes (10 cents), nickels (5 cents) and pennies (1 cent), write code to calculate the number of w... 阅读全文
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Cosine similarity is a measure of similarity between two vectors of an inner product space that measures the cosine of the angle between them. The cos... 阅读全文
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在写paper的时候，我们常常要给公式编号，难道我们要在公式和最右边的序号之间疯狂按空格键吗，当然不是，我们可以有更高效的方法来完成。首先我们插入一个1x3的表格，然后调节首尾两个格子的大小，借助标尺(可以在视图栏View中开启)将其调小到合适位置然后我们在尾部的格子中先填入括号()，然后指针放到中... 阅读全文
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9.7 Implement the "paint fill" function that one might see on many image editing programs. That is, given a screen (represented by a two-dimensional a... 阅读全文
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Template:1.A. Author Surname, 'Title', Year Published, (accessed 10 October 2013).Example:1.I. Heap, 'the Gloves', Imogenheap.co.uk, 2012, (access... 阅读全文
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9.6 Implement an algorithm to print all valid (e.g., properly opened and closed) combinations of n-pairs of parentheses.EXAMPLEInput: 3Output: ((())),... 阅读全文
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Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation -- it e 阅读全文
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9.5 Write a method to compute all permutations of a string.LeetCode上的原题，请参加我之前的博客Permutations 全排列和Permutations II 全排列之二。解法一：class Solution {public: ... 阅读全文
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Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For example, giv 阅读全文
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9.4 Write a method to return all subsets of a set.LeetCode上的原题，请参见我之前的博客Subsets 子集合和Subsets II 子集合之二。解法一：class Solution {public: vector > getSubset... 阅读全文
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9.3 A magic index in an array A[0.. .n-1] is defined to be an index such that A[i] = i. Given a sorted array of distinct integers, write a method to f... 阅读全文
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9.2 Imagine a robot sitting on the upper left corner of an X by Y grid. The robot can only move in two directions: right and down. How many possible p... 阅读全文
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9.1 A child is running up a staircase with n steps, and can hop either 1 step, 2 steps, or 3 steps at a time. Implement a method to count how many pos... 阅读全文
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Given a string that contains only digits 0-9 and a target value, return all possibilities to add binaryoperators (not unary) +, -, or * between the di 阅读全文
