Stack
A simple stack abstraction, backed by linked list.
Stack type
stack< Type >
Subtypes | Supertypes | Comparable types |
|---|---|---|
deque< Type > | sequence< Type > | java.util.Deque<Type> |
Stack creation
new linkedlist
Parameter type | Result type |
|---|---|
Type... | stack< Type > |
Creates an empty stack. Optionally, initial values may be specified right in the new linked list creation expression.
stack<string> test = new linkedlist<string> {"A", "B", "C"};
Alternatively, a sequence may be specified that is used to copy elements from.
stack<Type> = new linkedlist<Type> (sequence);Operations on stack
iterator
Operand type | Parameter type | Result type |
|---|---|---|
sequence< Type > | none | modifying_iterator< Type > |
This operation is redefined for stack to return a modifying_iterator.
addFirst / push
Operand type | Parameter type | Result type |
|---|---|---|
stack< Type > | Type | Type |
Appends an element to the head of the stack.
set.addFirst (value);
set.push (value);removeFirst / pop
Operand type | Parameter type | Result type |
|---|---|---|
stack< Type > |
| Type |
Removes an element from the head of the stack.
set.removeFirst (value);
set.pop (value);first / peek
Operand type | Parameter type | Result type |
|---|---|---|
stack< Type > |
| Type |
Retrieves the first element at the head of the stack without removing it.
set.first ();
set.peek ();