Explanatory Question

What is Stack and where it can be used?

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Answer with Explanation

The stack is a linear data structure which the order LIFO(Last In First Out) or FILO(First In Last Out) for accessing elements. Basic operations of the stack are: Push, Pop, Peek

Applications of Stack:

Infix to Postfix Conversion using Stack
Evaluation of Postfix Expression
Reverse a String using Stack
Implement two stacks in an array
Check for balanced parentheses in an expression

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