python 字典，列表，元组

##########################列表#############################
aList = [1,2,3,4,5]

#python 中 list 是可变类型，像下面这样修改是合法的

#增
aList.append(6)

#删
aList.pop()

#改
aList[0] = 100

#查
print(aList[0])

for v in aList:
print(v)

##############元组##########################
aTuple = (1,2,3,4,5)
#在python 元组是不可变类型，不可修改,像下面的操作时非法的

# aTuple[0] = 2

#查
for v in aTuple:
print(v)

################字典#########################
aDict = {"name":"zhengjinwei","age":23,"sex":"male"}

#在python 中字典是可以修改的
#增
aDict["index"] = 1

#删
aDict.pop("index")

aDict.clear()

#改
aDict["name"]="bloodchilde"

#查
for index,k in enumerate(aDict):
print index,k,aDict[k]

#python 中list 实现栈

class CStack:
def __init__(self):
self.__len = 0
self.__stack = []

def __del__(self):
del self.__stack

def push(self,obj):
self.__stack.append(obj)
self.__len += 1

def pop(self):
if not self.__len:
return None
else:
self.__len -= 1
return self.__stack.pop()

def getStackLen(self):
return self.__len

def getStackData(self):
return self.__stack

stack = CStack()

print(stack.getStackData())
print(stack.pop())

stack.push(1)
stack.push("zjw")

print(stack.getStackData())

print(stack.pop())
print(stack.pop())

#python list 实现队列

class CQueue:
def __init__(self):
self.__queue = []
self.__len = 0
def __del__(self):
del self.__queue

def enter_queue(self,obj):
self.__queue.append(obj)
self.__len += 1
def del_queue(self):
if not self.__len:
return None
else:
self.__len -= 1
return self.__queue.pop(0)
def view_queue(self):
return self.__queue

queue = CQueue()

print(queue.view_queue())

# enter the queue
queue.enter_queue(1)
queue.enter_queue(2)

print(queue.view_queue())

#out the queue
print(queue.del_queue())#show 1
print(queue.del_queue())#show 2
print(queue.del_queue()) #will show None