To the Top
File:  root - text - article - 2020 - 02 - compare-version-numbers.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 | 310 Views, 21107 Search Bots | 192 Words

Subscribe to Feed Burner | Browse | Archive
Hi, here's your problem today. This problem was recently asked by Amazon:

Version numbers are strings that are used to identify unique states of software products. A version number is in the format a.b.c.d. and so on where a, b, etc. are numeric strings separated by dots. These generally represent a hierarchy from major to minor changes. Given two version numbers version1 and version2, conclude which is the latest version number. Your code should do the following:
If version1 > version2 return 1.
If version1 < version2 return -1.
Otherwise return 0.

Note that the numeric strings such as a, b, c, d, etc. may have leading zeroes, and that the version strings do not start or end with dots. Unspecified level revision numbers default to 0.

Example:
Input:
version1 = "1.0.33"
version2 = "1.0.27"
Output: 1
#version1 > version2

Input:
version1 = "0.1"
version2 = "1.1"
Output: -1
#version1 < version2

Input:
version1 = "1.01"
version2 = "1.001"
Output: 0
#ignore leading zeroes, 01 and 001 represent the same number.

Input:
version1 = "1.0"
version2 = "1.0.0"
Output: 0
#version1 does not have a 3rd level revision number, which
defaults to "0"
Here's a starting point


class Solution:
def compareVersion(self, version1, version2):
# Fill this in.

version1 = "1.0.1"
version2 = "1"
print(Solution().compareVersion(version1, version2))
# 1
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 | 310 Views, 21107 Search Bots | 192 Words Subscribe to Feed Burner

Related Articles

  1. Daily Interview Problem: Full Binary Tree
  2. Floor and Ceiling of a Binary Search Tree
  3. Batch Programming in XP
  4. Daily Interview Problem: Trapping Rainwater
  5. Daily Interview Question: Longest Sequence with Two Unique Numbers
  6. Non-decreasing Array with Single Modification
  7. Daily Interview Problem: Largest Product of 3 Elements I
  8. YES!!
  9. Daily Interview Problem: Min Range Needed to Sort
  10. Daily Interview Problem: Tree Serialization

Comments (0)

Your Email (Domain Part Not Exposed):

Your Comments:

Privately By Mail Colors More Smileys S x y @

Verification (Click Image 2 Refresh):

    Be the first one to comment this page !


Page Edited: May 11 2024 14:36:49 | RSS Subscription
How to Cook a Perfect Steak? | <meta name="robots" content="noindex, follow" />