-
Notifications
You must be signed in to change notification settings - Fork 3
Expand file tree
/
Copy pathqueue.py
More file actions
43 lines (33 loc) · 890 Bytes
/
Copy pathqueue.py
File metadata and controls
43 lines (33 loc) · 890 Bytes
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
#!/usr/bin/env python
class Queue:
""" simple queue implementation using default list """
def __init__(self, list=None):
if list == None:
list = []
self.list = list
def enqueue(self, elem):
self.list.append(elem)
def dequeue(self):
if self.is_empty():
raise Exception('Queue is empty !')
else:
result = self.list[0]
self.list.pop(0)
return result
def is_empty(self):
if self.list:
return False
else:
return True
def peek(self):
if self.is_empty():
raise Exception('Queue is empty')
else:
return self.list[0]
def size(self):
if self.list:
return len(self.list)
else:
return 0
def show(self):
print self.list