91 - [Daily Problem] Course Prerequisites - course.txt

Hi, here's your problem today. This problem was recently asked by Google:

By the way, check out our NEW project AlgoPro (http://algopro.com) for over 60+ video coding sessions with ex-Google/ex-Facebook engineers.

You are given a hash table where the key is a course code, and the value is a list of all the course codes that are prerequisites for the key. Return a valid ordering in which we can complete the courses. If no such ordering exists, return NULL.
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 1478 Views, 15581 Search Bots | 159 Words

92 - [Daily Problem] Witness of The Tall People - witness.txt

Hi, here's your problem today. This problem was recently asked by Google:

There are n people lined up, and each have a height represented as an integer. A murder has happened right in front of them, and only people who are taller than everyone in front of them are able to see what has happened. How many witnesses are there?

Example:
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Top | Category: Computing | Comments (1) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 1955 Views, 20862 Search Bots | 94 Words

93 - [Daily Problem] Remove Consecutive Nodes that Sum to 0 - Remove-Consecutive-Nodes-that-Sum-to-0.txt

Hi, here's your problem today. This problem was recently asked by Uber:

Given a linked list of integers, remove all consecutive nodes that sum up to 0.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 220 Views, 20805 Search Bots | 146 Words

94 - Daily Interview Puzzle: Falling Dominoes - falling-dominoes.txt

Hi, here's your problem today. This problem was recently asked by Twitter:

Given a string with the initial condition of dominoes, where:

. represents that the domino is standing still
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 489 Views, 15603 Search Bots | 117 Words

95 - Daily Interview Puzzle: Intersection of Linked Lists - intersection-of-linked-lists.txt

Hi, here's your problem today. This problem was recently asked by Apple:

You are given two singly linked lists. The lists intersect at some node. Find, and return the node. Note: the lists are non-cyclical.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 225 Views, 18032 Search Bots | 136 Words

96 - Daily Interview Puzzle: Ways to Traverse a Grid - ways-to-traverse-a-grid.txt

Hi, here's your problem today. This problem was recently asked by Microsoft:

You 2 integers n and m representing an n by m grid, determine the number of ways you can get from the top-left to the bottom-right of the matrix y going only right or down.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 343 Views, 17189 Search Bots | 80 Words

97 - Daily Interview Puzzle: Minimum Size Subarray Sum - minimum-size-subarray-sum.txt

Hi, here's your problem today. This problem was recently asked by Amazon:

Given an array of n positive integers and a positive integer s, find the minimal length of a contiguous subarray of which the sum ≥ s. If there isn't one, return 0 instead.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 256 Views, 16293 Search Bots | 81 Words

98 - Daily Interview Question: Word Search - word-search.txt

Hi, here's your problem today. This problem was recently asked by Amazon:

You are given a 2D array of characters, and a target string. Return whether or not the word target word exists in the matrix. Unlike a standard word search, the word must be either going left-to-right, or top-to-bottom in the matrix.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 848 Views, 15746 Search Bots | 136 Words

99 - Daily Interview Question: Find Cycles in a Graph - find-cycles-in-a-graph.txt

Hi, here's your problem today. This problem was recently asked by Facebook:

Given an undirected graph, determine if a cycle exists in the graph.

Here is a function signature:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 392 Views, 20703 Search Bots | 72 Words

100 - Daily Interview Question: Longest Sequence with Two Unique Numbers - longest-sequence-with-two-unique-numbers.txt

Hi, here's your problem today. This problem was recently asked by Facebook:

Given a sequence of numbers, find the longest sequence that contains only 2 unique numbers.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 301 Views, 17155 Search Bots | 54 Words

101 - Daily Interview Question: Create a Simple Calculator - create-a-simple-calculator.txt

Hi, here's your problem today. This problem was recently asked by Google:

Given a mathematical expression with just single digits, plus signs, negative signs, and brackets, evaluate the expression. Assume the expression is properly formed.

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, | English | 333 Views, 20264 Search Bots | 61 Words

102 - How to Register OCX/DLL under Windows 64bit - how-to-register-32-bit-ocx-component-under-windows-10.txt

Windows 10下注册32位OCX控件的方法

　对于早期的32位Windows操作系统，我们可以直接注册OCX或DLL控件，但是在64位系统下是不可行的，而对于支持UAC（例如Windows 10等）的系统，就必须要复制到指定的目录，并使用管理员权限才能成功注册。

　　对于64位Windows 10操作系统，具体方法是：
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Top | Category: Computing | Comments (0) | Tags: 注册OCX, 32位OCX/DLL控件, Windows 10, 32 bit OCX, DLL, Windows 10, Register OCX, | 中文 | 269 Views, 33190 Search Bots | 189 Characters

103 - Daily Interview Question: Edit Distance - edit-distance.txt

Hi, here's your problem today. This problem was recently asked by AirBNB:

Given two strings, determine the edit distance between them. The edit distance is defined as the minimum number of edits (insertion, deletion, or substitution) needed to change one string to the other.

For example, "biting" and "sitting" have an edit distance of 2 (substitute b for s, and insert a t).
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | 741 Views, 17198 Search Bots | 80 Words

104 - Find Pythagorean Triplets - find-pythagorean-triplets.txt

Hi, here's your problem today. This problem was recently asked by Uber:

Given a list of numbers, find if there exists a pythagorean triplet in that list. A pythagorean triplet is 3 variables a, b, c where a^2 + b^2 = c^2

Example:
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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | 315 Views, 17471 Search Bots | 57 Words

105 - Number of Ways to Climb Stairs - number-of-ways-to-climb-stairs.txt

Hi, here's your problem today. This problem was recently asked by LinkedIn:

You are given a positive integer N which represents the number of steps in a staircase. You can either climb 1 or 2 steps at a time. Write a function that returns the number of unique ways to climb the stairs.

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Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms,  | English | 297 Views, 19270 Search Bots | 74 Words