blob: 64d7c11348f68721c6e56dc067ae71691a9cb002 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
public class SimpleQueue<T>
{
private Node firstNode;
private Node lastNode;
public SimpleQueue()
{
firstNode = null;
lastNode = null;
}
public void enqueue(T newEntry)
{
Node newNode = new Node(newEntry);
if(firstNode == null)
{
firstNode = newNode;
lastNode = newNode;
}
else
{
lastNode.next = newNode;
lastNode = newNode;
}
}
public T dequeue()
{
T result = null;
if(firstNode != null)
{
result = firstNode.data;
if(lastNode == firstNode)
{
lastNode = null;
}
firstNode = firstNode.next;
}
return result;
}
public T getFront()
{
if(firstNode != null)
{
return firstNode.data;
}
return null;
}
private class Node
{
private T data;
private Node next;
public Node(T aData, Node nextNode)
{
data = aData;
next = nextNode;
}
public Node(T aData)
{
this(aData, null);
}
}
}
|
