CurriculumStack
Stack
A <code>std::stack</code> is a container adapter providing LIFO (Last-In, First-Out) semantics. Like a stack of plates, the last one put on is the first one taken off.
011. Basics
A
std::stack is a Last In, First Out adapter for nested work, undo history, and depth-first traversal.main.cpp
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022. Adding Elements
Add values with the container's insertion operation and observe the ordering or adapter rule.
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033. Access and Lookup
Read values safely with the appropriate access API before removing or changing them.
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044. Iteration
Understand the traversal guarantee: sorted for ordered containers, FIFO/LIFO for adapters, and unspecified for hash tables.
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055. Removal
Remove by value, iterator, or end operation as appropriate; always check preconditions for empty adapters.
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066. Size and Empty
Use
size and empty to make control flow safe and explicit.main.cpp
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077. Applied Logic
This example exercises a small calculation or data-processing pattern with the container.
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088. Complexity
Choose the container based on the operation you perform most often, not just on familiar syntax.
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099. Practical Pattern
Use the container to model a real structure such as inventory, a task stream, an undo history, or a sliding window.
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1010. Pro Tip
Read top before pop because pop returns void.
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AI Tutor
Used heavily for undo mechanisms, depth-first search algorithms, and tracking nested structures like parentheses.