The Challenge is to perform very fast unique function for a long and wide array.

The data is small integer representing data permutations of items like DNA and Rubik's cube faces.

Input: Array of uint8 of dimensions (m, 48) with values 0:3

Output: Array Equivalent to unique(A,'rows')

Hints:

1) Columns can be merged to form a reduced number of columns 2) Unique has the option to provide an Array and a sorting Index

Solve

Solution Stats

25 Solutions

20 Solvers

Last Solution submitted on Jan 21, 2026

Last 200 Solutions

Solution Comments

Show comments

Problem Recent Solvers20

William George Berken ChrisR Ramon Villamangca

Suggested Problems

More from this Author309

Community Treasure Hunt

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

Start Hunting!