Problem 39. Which values occur exactly three times?

Created by Cody Team

Solve Later

Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if

 x = [1 2 5 2 2 7 8 3 3 1 3 8 8 8]

then

 y = [2 3]

Solve

Solution Stats

11933 Solutions
5090 Solvers

Last Solution submitted on Nov 22, 2024

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 older comments

Ashan Peiris on 14 Jun 2014

why 'tabulate' function does not work here. It gives an error saying undefined function.
http://www.mathworks.in/help/stats/tabulate.html

Christopher Creutzig on 24 Jul 2014

Ashan, tabulate is in stats. Cody does not have Statistics Toolbox.

Luyu Wang on 10 Jul 2018

the in-build function tabulate cannot used in here.

Mitchell on 27 Nov 2023

I never thought I could use this line of code for this problem but what do you know

Long Runjia Yu on 11 Feb 2024

i have used a loop construct for this but apparently there are far faster ways (length: 20ish instead of 80-100)

Solution Comments

Show comments

Problem Recent Solvers5090

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 39. Which values occur exactly three times?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers5090

Suggested Problems

More from this Author96

Problem Tags

Community Treasure Hunt

Problem 39. Which values occur exactly three times?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers5090

Suggested Problems

More from this Author96

Problem Tags

Community Treasure Hunt

Players