MATLAB: Seperating even/odd numbers from an array using doc mod

docmodehomeworkxlsread

I have an excel file that I imported into MatLab using xlsread…. this file has numbers ranging from 1000-5999 and has over 5000 individual elements in it.

The basics of the question is that all odd numbers are men and even numbers are women. How can I write a script using the remainder tool on Matlab??

The output must look something similiar to this(with different numbers):

The total # of habitants in Tiny Ville is = 10

Tiny Ville has = 8 women

Tiny Ville has = 2 men

Best Answer

Use the length() or size() function to get the total. Use the rem() function to calculate the number of men and women. Use the fprintf() function to print out your results to the command window. You can replace "is = " with just "is" or with just "=" because you don't need both - it doesn't sound right. Same for "has =".

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MATLAB: Count even elements vector

Isn't it trivial? Using sum:

sum(mod(myvec, 2) == 0)

Or using nnz:

nnz(mod(myvec, 2) == 0)

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Where are you stuck? What have you tried?

EDIT In response to your comment...

IF statements don't select out portions of an array like that. You will need an index to do that. Here are some clues, copy and paste into MATLAB:

x = 1:10
idx = mod(x,2)==1  % This is a logical index.
x(idx)
x(~idx)

Best Answer

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MATLAB: Count even elements vector

MATLAB: If even/odd statement

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