File: root - text - article - 2019 - 10 - maximum-in-a-stack.txt
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | Home Page | Category: Computing | 427 Views, 17113 Search Bots | 105 Words
| Browse | Archive
![Subscribe to Feed Burner Subscribe to Feed Burner](/images/form/rss.gif)
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | Home Page | Category: Computing | 427 Views, 17113 Search Bots | 105 Words
![Subscribe to Feed Burner Subscribe to Feed Burner](/images/form/rss.gif)
Hi, here's your problem today. This problem was recently asked by Twitter:
Implement a class for a stack that supports all the regular functions (push, pop) and an additional function of max() which returns the maximum element in the stack (return None if the stack is empty). Each method should run in constant time.
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | Home Page | Cateogry: Computing | 427 Views, 17113 Search Bots | 105 Words Implement a class for a stack that supports all the regular functions (push, pop) and an additional function of max() which returns the maximum element in the stack (return None if the stack is empty). Each method should run in constant time.
class MaxStack:
def __init__(self):
# Fill this in.
def push(self, val):
# Fill this in.
def pop(self):
# Fill this in.
def max(self):
# Fill this in.
s = MaxStack()
s.push(1)
s.push(2)
s.push(3)
s.push(2)
print s.max()
# 3
s.pop()
s.pop()
print s.max()
# 2
![Subscribe to Feed Burner Subscribe to Feed Burner](/images/form/rss.gif)
Related Articles
- Reverse a Linked List
- Absolute Path
- Daily Interview Question: Longest Sequence with Two Unique Numbers
- Algorithm Interview: String Compression
- Algorithm Interview: No Adjacent Repeating Characters
- Batch Programming in XP
- Daily Interview Puzzle: Minimum Size Subarray Sum
- Algorithm Interview: Lowest Common Ancestor of 2 Nodes in Binary Tree
- Find Missing Numbers in an Array
- Daily Interview Problem: Word Ordering in a Different Alphabetical Order
©2006~2024 SteakOverCooked - 0.01792 Seconds(s) - 979.015 KB/s - 27 Online
Memory: 492.69 KB
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - Server PHP Version: 7.4.33
How to Cook a Perfect Steak? | <meta name="robots" content="noindex, follow" />
![](/images/top.jpg)
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - Server PHP Version: 7.4.33
Read & Write - Normal - Mini - Post - All Comments - Statistics
Be the first one to comment this page !