Solved

easy way to get the second (third, ...)  largest number in python

Posted on 2015-01-22
1
134 Views
Last Modified: 2015-01-27
Hi experts,

Is there an easy way in Python to get the second, or the third largest number in an array? consider two cases, one is every number is different, the other case is there are possible duplicated numbers.

Looking at some similar from MS Excel as: large(A:A, 2) to get the second largest number in A column.

Thanks,
RDB
0
Comment
Question by:ResourcefulDB
1 Comment
 
LVL 25

Accepted Solution

by:
clockwatcher earned 500 total points
ID: 40565608
Here you go:

nth_largest = lambda l, nth: sorted(set(l))[-(nth if nth<=len(set(l)) and nth>=1 else 0)]
print(nth_largest( (9, 8, 8, 8, 9, 9, 9, 3, 3, 4), 2))   # return the second largest number in the list - 8

Open in new window


You didn't define what you want to happen if you ask for the 4th largest number but only have 3 unique numbers, I went with the smallest number.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

The purpose of this article is to demonstrate how we can upgrade Python from version 2.7.6 to Python 2.7.10 on the Linux Mint operating system. I am using an Oracle Virtual Box where I have installed Linux Mint operating system version 17.2. Once yo…
Article by: Swadhin
Introduction of Lists in Python: There are six built-in types of sequences. Lists and tuples are the most common one. In this article we will see how to use Lists in python and how we can utilize it while doing our own program. In general we can al…
Learn the basics of if, else, and elif statements in Python 2.7. Use "if" statements to test a specified condition.: The structure of an if statement is as follows: (CODE) Use "else" statements to allow the execution of an alternative, if the …
Learn the basics of modules and packages in Python. Every Python file is a module, ending in the suffix: .py: Modules are a collection of functions and variables.: Packages are a collection of modules.: Module functions and variables are accessed us…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now