This problem is about counting groups.

Example

If you have x:

 x = [0.8 0.8 0.8 0.3 0.3 0.4 0.5 0.6 0.6 0.9]

then all 0.8's being first in line, get a value of 1, all 0.3's get a value of 2, all 0.4's a value of 3 and so on, till the output y is:

 y = [1 1 1 2 2 3 4 5 5 6]

That's it!

Please note, to make it easier, the list will be "pre-sorted".

Solve

Solution Stats

299 Solutions

156 Solvers

Last Solution submitted on Jul 21, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers156

Anne Adamczyk Caitlin Hoang Minh Tri Lorenzo

Suggested Problems

More from this Author17

Problem Tags

Community Treasure Hunt

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

Start Hunting!