Cody

Problem 44467. Product of Each Column

Solution 1544947

Submitted on 31 May 2018 by avi kiko
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Test Suite

Test Status Code Input and Output
1   Pass
filetext = fileread('myProd.m'); assert(isempty(strfind(filetext, 'regexp')),'regexp hacks are forbidden')

2   Pass
filetext = fileread('myProd.m'); assert(isempty(strfind(filetext, 'prod')),'Cannot use prod() function')

3   Pass
mat = ones(5); v_correct = ones(1, 5); assert(isequal(myProd(mat),v_correct))

x = 1 x = 1 x = 1 x = 1 x = 1 v = 1 x = 1 x = 1 x = 1 x = 1 x = 1 v = 1 1 x = 1 x = 1 x = 1 x = 1 x = 1 v = 1 1 1 x = 1 x = 1 x = 1 x = 1 x = 1 v = 1 1 1 1 x = 1 x = 1 x = 1 x = 1 x = 1 v = 1 1 1 1 1

4   Pass
mat = [ 1, 2, 3, 4; 5, 6, 7, 2; 2, 3, 4, 5]; v_correct = [10, 36, 84, 40]; assert(isequal(myProd(mat),prod(mat)))

x = 1 x = 5 x = 10 v = 10 x = 2 x = 12 x = 36 v = 10 36 x = 3 x = 21 x = 84 v = 10 36 84 x = 4 x = 8 x = 40 v = 10 36 84 40

5   Pass
m = randi([5,15]); n = randi([5,15]); mat = randi(5, n, m); v_correct = prod(mat); assert(isequal(myProd(mat),prod(mat)))

x = 4 x = 8 x = 8 x = 40 x = 120 x = 480 x = 2400 x = 9600 v = 9600 x = 1 x = 5 x = 20 x = 40 x = 200 x = 200 x = 400 x = 1200 v = 9600 1200 x = 1 x = 4 x = 12 x = 12 x = 36 x = 180 x = 540 x = 1620 v = 9600 1200 1620 x = 4 x = 12 x = 36 x = 180 x = 180 x = 900 x = 1800 x = 1800 v = 9600 1200 1620 1800 x = 3 x = 12 x = 60 x = 60 x = 300 x = 900 x = 3600 x = 14400 v = 9600 1200 1620 1800 14400 x = 3 x = 6 x = 24 x = 120 x = 480 x = 480 x = 960 x = 4800 v = 9600 1200 1620 1800 14400 4800 x = 5 x = 5 x = 5 x = 20 x = 100 x = 400 x = 2000 x = 6000 v = 9600 1200 1620 1800 14400 4800 6000 x = 5 x = 25 x = 25 x = 100 x = 300 x = 300 x = 1200 x = 4800 v = 9600 1200 1620 1800 14400 4800 6000 4800 x = 3 x = 9 x = 36 x = 108 x = 324 x = 1296 x = 1296 x = 1296 v = 9600 1200 1620 1800 14400 4800 6000 4800 1296 x = 4 x = 4 x = 16 x = 32 x = 96 x = 96 x = 288 x = 864 v = 9600 1200 1620 1800 14400 4800 6000 4800 1296 864