Repository navigation
Expand file tree
/
Copy pathStackUsingArray.cs
More file actions
73 lines (65 loc) · 1.54 KB
/
Copy pathStackUsingArray.cs
File metadata and controls
73 lines (65 loc) · 1.54 KB
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
73
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Stack.Array
{
public class StackUsingArray<T> : IEnumerable<T>
{
T[] _items = new T[0];
int _size = 0;
public void Push(T item)
{
if (_size == _items.Length)
{
int newLength = (_size == 0) ? 10 : _size * 2;
T[] newArray = new T[newLength];
_items.CopyTo(newArray, 0);
_items = newArray;
}
_items[_size] = item;
_size++;
}
public T Pop()
{
if (_size == 0)
{
throw new InvalidOperationException("Stack is Empty");
}
_size--;
return _items[_size];
}
public T Peek()
{
if (_size == 0)
{
throw new InvalidOperationException("Stack is Empty");
}
return _items[_size - 1];
}
public int Count
{
get
{
return _size;
}
}
public void Clear()
{
_size = 0;
}
public IEnumerator<T> GetEnumerator()
{
for (int i = _size-1; i >=0; i--)
{
yield return _items[i];
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
}
}