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Queue.py
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78 lines (56 loc) · 1.57 KB
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class Queue:
def __init__(self):
self.items = []
def isEmpty(self):
return self.items == []
def enqueue(self, item):
self.items.insert(0, item)
def dequeue(self):
return self.items.pop()
def size(self):
return len(self.items)
q = Queue()
q.enqueue(4)
q.enqueue('god')
q.enqueue(True)
print(q.dequeue())
def hotPotato(namelist, num):
simqueue = Queue()
for name in namelist:
simqueue.enqueue(name)
while simqueue.size() > 1:
for i in range(num):
simqueue.enqueue(simqueue.dequeue())
simqueue.dequeue()
return simqueue.dequeue()
print(hotPotato(["Bill","David","Susan","Jane","Kent","Brad"],7))
# 设计一个良策都能插入删除的队列deque
class Deque:
def __init__(self):
self.items = []
def isEmpty(self):
return self.items == []
def addRear(self, item):
self.items.insert(0, item)
def addFront(self, item):
self.items.append(item)
def removeFront(self):
return self.items.pop()
def removeRear(self):
return self.items.pop(0)
def size(self):
return len(self.items)
# 利用Deque解决回文字符串
def palcheker(aString):
chardeque = Deque()
for ch in aString:
chardeque.addFront(ch)
stillEqual = True
while chardeque.size() > 1 and stillEqual:
first = chardeque.removeFront()
last = chardeque.removeRear()
if first != last:
stillEqual = False
return stillEqual
print(palcheker('lsdkjfskf'))
print(palcheker('radar'))