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Sep 11, 2023 · 3 min read · Why Node.js: Earlier Javascript code can only be executed in browsers like Google Chrome. Because browsers have embedded javascript engines like Google Chrome has a V8 Javascript Engine. So to execute the JavaScript code outside the browsers was not ...
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May 21, 2023 · 5 min read · HashMap is a class in Java that implements the Map interface and is part of the Java Collections Framework. It is used to store and manipulate key-value pairs, where each key is unique within the map. It uses an array and LinkedList to store key-valu...
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May 5, 2023 · 4 min read · A queue is a linear data structure or a collection in Java and an abstract data type that represents a collection of elements, typically ordered in a sequence, where the primary operations are adding an element to the end of the sequence (enqueue), a...
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May 1, 2023 · 4 min read · What is a stack? Stack is a linear data structure that follows the Last-In-First-Out (LIFO) principle. This means that the last element added to the stack will be the first one to be removed. We can visualize a stack as a stack of plates, where the l...
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Apr 28, 2023 · 2 min read · The array is a collection of similar data types which stores data in contiguous memory locations. It is a static datatype means has a fixed length once created can not change the length of the array. It is 0 index based. We can get the length of the ...
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