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Problem 1259. It's race time again! Write a function that is at least twice as fast as the test suite call of repmat().

Solution 234226

Submitted on 23 Apr 2013 by Mehmet OZC
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Test Suite

Test Status Code Input and Output
1   Pass
%% x = 1.7; m = 197; n = 535; tic y_correct = repmat(x, m, n); t_repmat = toc tic y_myrepmat = my_repmat(x, m, n); t_myrepmat = toc assert(isequal(y_myrepmat,y_correct) && t_myrepmat < t_repmat/2)

t_repmat = 0.0061 Elapsed time is 0.000634 seconds. t_myrepmat = 1.3000e-05

2   Pass
%% x = -0.3; m = 1; n = 5350; tic y_correct = repmat(x, m, n); t_repmat = toc tic y_myrepmat = my_repmat(x, m, n); t_myrepmat = toc assert(isequal(y_myrepmat,y_correct) && t_myrepmat < t_repmat/2)

t_repmat = 9.1000e-05 Elapsed time is 0.000213 seconds. t_myrepmat = 1.0000e-05

3   Pass
%% x = 0; m = 14; n = 5350; tic y_correct = repmat(x, m, n); t_repmat = toc tic y_myrepmat = my_repmat(x, m, n); t_myrepmat = toc assert(isequal(y_myrepmat,y_correct) && t_myrepmat < t_repmat)

t_repmat = 1.9600e-04 Elapsed time is 0.000014 seconds. t_myrepmat = 9.0000e-06

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