Decorator pattern Design Pattern

What is Decorator Design Pattern?

Decorator design pattern falls under the structural design pattern category. As the name implies, decorator pattern provides some kind of decorational effect on the original object. That is, the pattern provides the ability to add new features and behaviors to a base object without altering its existing structure. That is there will be additional features […]

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how hashmap works java

HashMap in Java

What is Hashing? Hashing is a mechanism to convert one value to another. The process which performs this transformation is called the ‘Hash Function’. The input to the hash function is normally called as the ‘Key’ and this could be any value which can be converted to a String. The output or the hashed value […]

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Introduction to Design Patterns

What are Design Patterns? What is a Pattern? Patterns exist everywhere in the world. In culinary, art, medicine, law, mathematics, music, dancing and the list goes on. Genrally, a pattern is identified as a recurring arrangement created to solve some generalized problem. It is simply a solution outline. That solution outline can be used over and over […]

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Strategy Design Pattern

Do you Know The Strategy Design Pattern? What is Strategy Design Pattern? Do you use Strategies? We all have dealt with strategies in certain moments of our life. In more technical words strategy is a set of planned actions designed to achieve a specific goal. Simply, you try out many strategies when a final exam […]

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Frontend interview questions

Questions you may get asked: 10 Interview Questions Every JavaScript Developer Should Know Front-End Job Interview Questions Front End Web Development Quiz Interview Questions for Front-End-Developer JavaScript Web Quiz Questions you ask: An open source list of developer questions to ask prospective employers Preparing: Preparing for a Front-End Web Development Interview in 2017 Interview Cake  — […]

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Leetcode – Zuma Game

Think about Zuma Game. You have a row of balls on the table, colored red(R), yellow(Y), blue(B), green(G), and white(W). You also have several balls in your hand. Each time, you may choose a ball in your hand, and insert it into the row (including the leftmost place and rightmost place). Then, if there is […]

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