What is the primary use of a stack in algorithm design?

What is the primary use of a stack in algorithm design?

Step 1: Understand what a stack is. A stack is a data structure that works like a stack of plates, where you can only add or remove the top plate.
Step 2: Learn that stacks follow a Last In, First Out (LIFO) principle. This means the last item added is the first one to be removed.
Step 3: Recognize that stacks are used in programming to keep track of function calls. When a function is called, it is added to the stack.
Step 4: When a function finishes executing, it is removed from the stack, allowing the program to return to the previous function.
Step 5: Understand that stacks help with backtracking. If a function needs to go back to a previous state, it can do so by using the stack.

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