FilesExpand file tree

 master

/

queue_on_list.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

45 lines (38 loc) · 1.19 KB

 master

/

queue_on_list.py

Copy path

Top

File metadata and controls

• Code
• Blame

45 lines (38 loc) · 1.19 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

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

"""Queue represented by a python list"""

class Queue():

def __init__(self):

self.entries = []

self.length = 0

self.front=0

def __str__(self):

printed = '<' + str(self.entries)[1:-1] + '>'

return printed

"""Enqueues {@code item}

@param item

item to enqueue"""

def put(self, item):

self.entries.append(item)

self.length = self.length + 1

"""Dequeues {@code item}

@requirement: |self.length| > 0

@return dequeued

item that was dequeued"""

def get(self):

self.length = self.length - 1

dequeued = self.entries[self.front]

self.front-=1

self.entries = self.entries[self.front:]

return dequeued

"""Rotates the queue {@code rotation} times

@param rotation

number of times to rotate queue"""

def rotate(self, rotation):

for i in range(rotation):

self.put(self.get())

"""Enqueues {@code item}

@return item at front of self.entries"""

def front(self):

return self.entries[0]

"""Returns the length of this.entries"""

def size(self):

return self.length