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HackerRank

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HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses, where developers compete by trying to program according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, JavaScript) and span multiple computer science domains. When a programmer submits a solution to a programming challenge, their submission is scored on the accuracy of their output. Programmers are then ranked globally on the HackerRank leaderboard and earn badges based on their accomplishments to drive competition among users.

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The Z Algorithm is a linear-time string matching algorithm used to find all the occurrences of a pattern string in a text string. It uses a preprocessing step to create a Z array, which stores the length of the longest common prefix of the text and a suffix starting from a specific position.

  • Updated Feb 13, 2023
  • Kotlin

The Closest Pair of Points problem is a computational geometry problem in which the task is to find the two points in a set of points in a plane that are closest to each other. The solution to this problem has numerous applications in areas such as computer graphics, geographic information systems, and pattern recognition.

  • Updated Feb 8, 2023
  • Kotlin

Created by Vivek Ravisankar, Hari Karunanidhi

Released July 2009

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codechef competitive-programming