File: root - text - article - 2019 - 11 - queue-using-two-stacks.txt
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | Home Page | Category: Computing | 576 Views, 23085 Search Bots | 93 Words
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Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | Home Page | Category: Computing | 576 Views, 23085 Search Bots | 93 Words
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Hi, here's your problem today. This problem was recently asked by Apple:
Implement a queue class using two stacks. A queue is a data structure that supports the FIFO protocol (First in = first out). Your class should support the enqueue and dequeue methods like a standard queue.
Here's a starting point:
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | Home Page | Cateogry: Computing | 576 Views, 23085 Search Bots | 93 Words Implement a queue class using two stacks. A queue is a data structure that supports the FIFO protocol (First in = first out). Your class should support the enqueue and dequeue methods like a standard queue.
Here's a starting point:
class Queue:
def __init__(self):
# Fill this in.
def enqueue(self, val):
# Fill this in.
def dequeue(self):
# Fill this in.
q = Queue()
q.enqueue(1)
q.enqueue(2)
q.enqueue(3)
print q.dequeue()
print q.dequeue()
print q.dequeue()
# 1 2 3
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