What is Stack?
The stack is a linear data structure like an array in which only the last inserted element can be accessed. This data structure works over the principle Last In First Out (LIFO). It is very fast since it has to access only last added element so it requires constant time to do so having complexity O(1).
Stacks should be used over arrays when we need to work with data in the LIFO form. Push operation on the stack is used to adds an item in the stack. If the stack is full, then it is said to be an Overflow condition.
Basic skeleton of stack: Below example run using “$node skeleton.js” command to get basic stack skelton.
Example: This example describe the push operation on stack.
After Pushing ’14’ by calling stack1.push(14) function to the top of stack.
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