A stack is a linear data structure that follows a particular order in which operations are performed, known as Last In First Out (LIFO). This means the last element added to the stack will be the first one to be removed, making it ideal for scenarios where you need to reverse the order of elements or manage function calls in programming.

Stacks

linear data structure

Last In First Out

LIFO, or Last In, First Out, is a method of inventory valuation where the most recently produced or acquired items are considered sold first. This approach can impact financial statements and tax calculations, especially in times of inflation, by reducing taxable income and increasing cost of goods sold.

LIFO

A stack is a linear data structure that follows the Last In, First Out (LIFO) principle, where the last element added is the first to be removed. It is commonly used in scenarios such as undo mechanisms in software, expression evaluation, and backtracking algorithms.

stack

The order of operations is a set of rules that dictates the correct sequence to evaluate mathematical expressions, ensuring consistent and accurate results across different calculations. This sequence is crucial for solving complex problems and is commonly remembered by the acronym PEMDAS, which stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

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