Cody

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 1658447

Submitted on 25 Oct 2018 by li haitao
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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 = 5.0100e-04 Elapsed time is 0.001244 seconds. t_myrepmat = 6.4000e-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 = 1.2300e-04 Elapsed time is 0.000093 seconds. t_myrepmat = 5.3000e-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 = 2.0100e-04 Elapsed time is 0.000093 seconds. t_myrepmat = 3.1000e-05