Problem 956. Unique: Enhanced Performance - Large and Wide Array - Speed Improvement (66% savings)
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
Solution Stats
Solution Comments
Show commentsProblem Recent Solvers19
Suggested Problems
-
Is my wife right? Now with even more wrong husband
1316 Solvers
-
Back to basics 16 - byte order
190 Solvers
-
Volume difference between Ellipsoid and Sphere
125 Solvers
-
find the roots of a quadratic equation
223 Solvers
-
Diagonal & Anti-Diagonal Matrix: Easy
93 Solvers
More from this Author294
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!