Problem 38. Return a list sorted by number of occurrences

Created by Cody Team

Difficulty:Rate

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Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x.
Ties are resolved by a sort from lowest to highest.
So if
 x = [1 2 2 2 3 3 7 7 93]
then
 y = [2 3 7 1 93]

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Last Solution submitted on May 09, 2025

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2 Comments

Chul Min Yeum on 3 Jan 2020

Good problem!

Ahmed Nazir on 30 Sep 2020

It is easy if you use matlab function...

useful function ==> categorical, countcats , sort, unique

solution:
https://github.com/AhmedNazir/MatlabCody/blob/master/popularity.m

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Problem 38. Return a list sorted by number of occurrences

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Problem 38. Return a list sorted by number of occurrences

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Last 200 Solutions

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PIVlab surpasses 100K all-time File Exchange downloads

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