python线性数据结构
1.栈(Stack)(后进先出)
栈的实现:
class Stack: def __init__(self): self.items = [] def isEmpty(self): return self.items == [] def push(self,item): return self.items.append(item) def pop(self): return self.items.pop() def peek(self): return self.items[-1] def size(self): return len(self.items)
2.队列(Queue)(先进先出)
队列的实现:
class Queue:
def __init__(self):
self.items = []
def isEmpty(self):
return self.items == []
#入队,从0
def enquque(self,item):
return self.items.insert(0,item)
#出队,从尾
def dequeue(self):
return self.items.pop()
3.双端队列(Dqueue)(从首段和尾端任一端添加和移除)
双端队列实现:
class Deque: def __init__(self): self.items = [] def isEmpty(self): return self.items == [] def addFront(self, item): self.items.append(item) def addRear(self, item): self.items.insert(0,item) def removeFront(self): return self.items.pop() def removeRear(self): return self.items.pop(0) def size(self): return len(self.items)