Given an input element x, and the dimensions, (m, n) return a matrix of size m x n filled with element x. This must be done in less than half the time that repmat(x, m, n) takes. This is the sequel to http://www.mathworks.com/matlabcentral/cody/problems/1237-it-s-race-time-write-a-faster-function-than-the-test-suite-call-of-unique.
Example: Input: repl_mat(2, 2, 5) Output: [2, 2, 2, 2, 2; 2, 2, 2, 2, 2];
Solution Stats
Problem Comments
2 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers21
Suggested Problems
-
Remove the two elements next to NaN value
703 Solvers
-
Given a window, how many subsets of a vector sum positive
871 Solvers
-
295 Solvers
-
Simple date to serial no. conversion
133 Solvers
-
Rounding off numbers to n decimals
5512 Solvers
More from this Author7
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
This doesn't seem to be possible anymore: http://stackoverflow.com/questions/28722723/matlab-bsxfun-no-longer-faster-than-repmat. Any chance of updating the problem with looser time tolerances?
This problem is meanless!
The solutions passed are not always fast than repmat, or just cheat(ex. using "tic")