tenua.symbol
Class DoubleStack

java.lang.Object
  tenua.symbol.DoubleStack

All Implemented Interfaces:

java.lang.Cloneable

public class DoubleStack
extends java.lang.Object
implements java.lang.Cloneable

A simple stack of doubles. Until autoboxing is implemented, it's too hard to keep casting back and forth, using java.util.Stack.
Is NOT thread-safe.

Author:

Daniel Wachsstock

Constructor Summary

DoubleStack()
construct a new DoubleStack with initial capacity == 10.

DoubleStack(int capacity)
construct a new DoubleStack with initial capacity == capacity.

DoubleStack(Vec d)
construct a new DoubleStack with given initial values.

Method Summary

void	clear() clear the stack.
java.lang.Object	clone() clones the stack
Vec	getValues() return a copy of the numbers in the stack
double	peek() return the top of the stack without removing it.
double	pop() pop a value off the stack.
void	push(double d) push a value onto the stack.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleStack

public DoubleStack()

construct a new DoubleStack with initial capacity == 10.

DoubleStack

public DoubleStack(int capacity)

construct a new DoubleStack with initial capacity == capacity.

Parameters:

capacity - the initial capacity

DoubleStack

public DoubleStack(Vec d)

construct a new DoubleStack with given initial values.

Parameters:

d - the values to load onto the stack. The top of the stack will be d.get(d.size()-1); the bottom of the stack will be d.get(0);

Method Detail

push

public void push(double d)

push a value onto the stack.

Parameters:

d - the value to push

pop

public double pop()

pop a value off the stack.

Returns:

the previous top of the stack

Throws:

EmptyStackException - if the stack is empty

peek

public double peek()

return the top of the stack without removing it.

Returns:

the top of the stack

Throws:

EmptyStackException - if the stack is empty

clear

public void clear()

clear the stack.

getValues

public Vec getValues()

return a copy of the numbers in the stack

Returns:

a Vec_array that contains the values in the stack

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

clones the stack

Overrides:

clone in class java.lang.Object

Throws:

java.lang.CloneNotSupportedException