: Class DualSequence

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DoubleLink
Class DualSequence

java.lang.Object
  |
  +--DoubleLink.DualSequence

public class DualSequence
extends java.lang.Object

DualSequence models a sequence of objects so such that: -- objects at added to the front and to the rear of the sequence; -- objects can be removed from the front and rear of the sequence; -- the sequence's contents can be displayed from front to rear and from rear to front (that is, in reverse order)

Constructor Summary
`DualSequence()` Constructor DualSequence constructs an empty sequence

Method Summary
`void`	`addToFront(java.lang.Object ob)` addToFront adds a new object to the front of this sequence
`void`	`addToRear(java.lang.Object ob)` addToRear adds a new object to the end of this sequence
`java.lang.Object`	`removeFromFront()` removeFromFront deletes the front object of this sequence
`java.lang.Object`	`removeFromRear()` removeFromRear deletes the rear object of this sequence
`java.lang.String`	`toString()` toString constructs a string representation of the sequence from front to rear
`java.lang.String`	`toStringReversed()` toStringReversed constructs a string representation of the sequence in reverse order, from rear to front

Methods inherited from class java.lang.Object

clone, 
equals, 
finalize, 
getClass, 
hashCode, 
notify, 
notifyAll, 
wait, 
wait, 
wait

Constructor Detail

DualSequence

public DualSequence()

Constructor DualSequence constructs an empty sequence

Method Detail

addToFront

public void addToFront(java.lang.Object ob)

addToFront adds a new object to the front of this sequence

Parameters:: ob - - the object added

addToRear

public void addToRear(java.lang.Object ob)

addToRear adds a new object to the end of this sequence

Parameters:: ob - - the object added

removeFromFront

public java.lang.Object removeFromFront()

removeFromFront deletes the front object of this sequence

Returns:: the object that is removed.

removeFromRear

public java.lang.Object removeFromRear()

removeFromRear deletes the rear object of this sequence

Returns:: the object that is removed.

toString

public java.lang.String toString()

toString constructs a string representation of the sequence from front to rear

Returns:: the string
Overrides:: toString in class java.lang.Object

toStringReversed

public java.lang.String toStringReversed()

toStringReversed constructs a string representation of the sequence in reverse order, from rear to front

Returns:: the string