HackerRank - Equal | Full Solution with Simplified Examples and Visuals | Study Algorithms
Nikhil Lohia
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I want to share with you my knowledge, that I have gained all my life. I like to see every task in your day to day life as an interesting problem to solve, and if you can understand the requirements, solving for it can become somewhat intuitive. I try to explore certain aspects of day to day life and how I can make them easier for you. This involves daily hacks, tutorials, innovations, new discoveries, experiences and all the stuff I find amusing. As a software engineer myself, I also believe that good problem solving skills can help you overcome most of the barriers in life. Programming is one of them. If you know how to approach a problem, writing a code for it in any language could be a very typical task. With this channel I aim to focus on the way to solve a problem efficiently rather than just its implementation.
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In this problem you want to ensure that all the employees have an equal number of chocolate distribution. However, you can only give 1, 2, or 5 chocolates at a time. You give chocolates to everyone but 1 employee. In this video I explain the test cases to understand it in a perfect way. Then watch the video to see how I simplify the problem using a very neat trick. All along with visuals and explanations. Chapters: 00:00 - Intro 01:06 - Problem statement and description 05:08 - Simplification of problem 09:00 - How to Solve? 14:28 - Dry-run of Code 19:24 - Final Thoughts Actual problem on HackerRank: https://www.hackerrank.com/challenges/equal/problem 📚 Links to topics I talk about in the video: Greedy Algorithms: https://youtu.be/3H2G3KuEiRU Solution to HackerRank Problems: https://youtube.com/playlist?list=PLFdAYMIVJQHPJfb3foIK-RLt-zsI0T-zW What is Big O?: https://youtu.be/-MJ7EIV57dI Time Complexity: https://youtu.be/hYnsWroM4kQ 📘 A text based explanation is available at: https://studyalgorithms.com/array/hackerrank-equal-solution/ 👨💻 Code on Github: https://github.com/nikoo28/java-solutions/blob/master/src/main/java/hackerrank/algorithms/dynamicprogramming/Equal.java Test-cases on Github: https://github.com/nikoo28/java-solutions/blob/master/src/test/java/hackerrank/algorithms/dynamicprogramming/EqualTest.java 📖 Reference Books: Starting Learn to Code: https://amzn.to/36pU0JO Favorite book to understand algorithms: https://amzn.to/39w3YLS Favorite book for data structures: https://amzn.to/3oAVBTk Get started for interview preparation: https://amzn.to/39ysbkJ 🔗 To see more videos like this, you can show your support on: https://www.buymeacoffee.com/studyalgorithms 🎥 My Recording Gear: Recording Light: https://amzn.to/3pAqh8O Microphone: https://amzn.to/2MCX7qU Recording Camera: https://amzn.to/3alg9Ky Tablet to sketch and draw: https://amzn.to/3pM6Bi4 Surface Pen: https://amzn.to/3pv6tTs Laptop to edit videos: https://amzn.to/2LYpMqn 💻 Get Social 💻 Follow on Facebook at: https://www.facebook.com/studyalgos Follow on Twitter at: https://www.twitter.com/studyalgorithms Follow on Tumblr at: https://studyalgos.tumblr.com/ Subscribe to RSS feeds: https://studyalgorithms.com/feed/ Join fan mail: http://eepurl.com/g9Dadv #hackerrank #programming #interview
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