mirror of
https://github.com/autistic-symposium/master-algorithms-py.git
synced 2025-04-29 12:16:14 -04:00
47 lines
1.0 KiB
Python
Executable File
47 lines
1.0 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# Time: 5 min
|
|
|
|
__author__ = "bt3"
|
|
|
|
|
|
class Queue(object):
|
|
def __init__(self):
|
|
self.enq = []
|
|
self.deq = []
|
|
|
|
def enqueue(self, item):
|
|
return self.enq.append(item)
|
|
|
|
def deque(self):
|
|
if not self.deq:
|
|
while self.enq:
|
|
self.deq.append(self.enq.pop())
|
|
return self.deq.pop()
|
|
|
|
def peak(self):
|
|
if not self.deq:
|
|
while self.enq:
|
|
self.deq.append(self.enq.pop())
|
|
if self.deq:
|
|
return self.deq[-1]
|
|
|
|
def size(self):
|
|
return len(self.enq) + len(self.deq)
|
|
|
|
def isempty(self):
|
|
return not (self.enq + self.deq)
|
|
|
|
if __name__ == '__main__':
|
|
q = Queue()
|
|
for i in range(1,11):
|
|
q.enqueue(i)
|
|
print 'Size:', q.size()
|
|
print 'Is empty?', q.isempty()
|
|
print 'Peak: ', q.peak()
|
|
print
|
|
print 'Dequeuing...'
|
|
for i in range(10):
|
|
print q.deque()
|
|
print 'Size:', q.size()
|
|
print 'Is empty?', q.isempty()
|
|
print 'Peak: ', q.peak() |