Write a function to determine which elements of an array are even numbers (i.e., …, -4, -2, 0, 2, 4, …). Your function should return a logical array of the same size as the input with 1s (TRUE) in the locations corresponding to even numbers.

Question

Meesha Lini Eesan 2015-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/184721-write-a-function-to-determine-which-elements-of-an-array-are-even-numbers-i-e-4-2-0-2-4

回答： Meesha Lini Eesan 2015-3-24

采纳的回答： Konstantinos Sofos

How could I solve this?

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Answer 1

Konstantinos Sofos 2015-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/184721-write-a-function-to-determine-which-elements-of-an-array-are-even-numbers-i-e-4-2-0-2-4#answer_172482

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funvtion Out = findeven(In)
Out = ~mod(In,2)
end

Assuming:

In =
      -6    -5    -2     0
       1     2     3     4
       5     6     7     8
       9    10    11    12
Out =
       1     0     1     1
       0     1     0     1
       0     1     0     1
       0     1     0     1

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Answer 2

Meesha Lini Eesan 2015-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/184721-write-a-function-to-determine-which-elements-of-an-array-are-even-numbers-i-e-4-2-0-2-4#answer_172493

A = [-10,-9,-8,-7,-6,-5,-4,-3,-2,1,0,1,2,3,4,5,6,7,8,9,10] % I assign -10 to 10 vector A. B = ~mod(A,2) %I used this function to find the even element using the ~mod function %(modulus) and output to True(1) and False(0)because I use only mod the %output will true(1) will be an odd number.