Reference

Stack

New

Input	A list of elements.
Output	A stack containing the list of elements with the last element at the top of the stack.

Signature

Example

Push

Input	A stack and an element.
Output	A new stack with the element added to the top.

Signature

Example

Pop

Input	A stack.
Output	A new stack with the top element removed.

Signature

Example

Peek

Input	A stack.
Output	The element at the top of the stack.

Signature

Example

Reverse

Input	A stack.
Output	A new stack with the elements in reverse order.

Signature

Example

Is Empty

Input	A stack.
Output	True if the stack is empty, false otherwise.

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Example

Is Not Empty

Input	A stack.
Output	True if the stack is not empty, false otherwise.

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Example

Length

Input	A stack.
Output	The number of elements in the stack.

Signature

Example