The stacks are fundamental data structures. It has many usages from the language compiler, the back button in the web browsers to Undo in a word processor. The stacks use Last In First Out mechanism to insert/add and remove data from it. It can be implemented with either Linked List or Array. We will explore the implementation of...

The var and let keyword can get very confusing and may lead to unexpected behaviors in an application and may also lead to some silly bugs. I will explain what is both and when to use one. Take a look at the code below, function do() { for(var i = 0; i < 5; i++) { console.log(i); }...