Cody

# Problem 44467. Product of Each Column

Solution 1544948

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 = 1 x = 4 x = 12 x = 12 x = 36 x = 144 x = 288 x = 1152 x = 4608 v = 4608 x = 2 x = 6 x = 24 x = 72 x = 216 x = 648 x = 1296 x = 1296 x = 1296 v = 4608 1296 x = 1 x = 3 x = 9 x = 9 x = 18 x = 18 x = 54 x = 162 x = 162 v = 4608 1296 162 x = 2 x = 2 x = 10 x = 10 x = 20 x = 40 x = 40 x = 200 x = 1000 v = 4608 1296 162 1000 x = 4 x = 16 x = 48 x = 144 x = 288 x = 576 x = 2304 x = 9216 x = 18432 v = 4608 1296 162 1000 18432 x = 3 x = 15 x = 75 x = 225 x = 450 x = 1350 x = 5400 x = 5400 x = 21600 v = 4608 1296 162 1000 18432 21600 x = 2 x = 8 x = 40 x = 200 x = 1000 x = 3000 x = 12000 x = 60000 x = 300000 v = 4608 1296 162 1000 18432 21600 300000 x = 3 x = 9 x = 45 x = 135 x = 675 x = 2700 x = 5400 x = 16200 x = 81000 v = 4608 1296 162 1000 18432 21600 300000 81000