Odd and even numbers
Hi
I’m new in matlab so i need a little help to get started. How do i make a program which can distinguish from odd and even numbers? I know that i need to make a loop, it should be either if or while but i would love some suggestions on how to solve this problem.
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You simply have to go back to the definition of odd and even. An (integer) number is even if it is divisible by 2, odd otherwise. Divisible by 2 means that the remainder when divided by 2 is 0. That is easy to test, the function to get the remainder is (or you can use ). As with many things in matlab you do not need a loop, the functions work on vector / matrices
m = [1 2 3;4 5 6];
iseven = rem(m, 2) == 0;Mathworks Support Staff Comments
Depending on the usage, you can use “rem” or “mod” to check if a number is divisible by 2. The “r = rem(a,b)” function finds the remainder after division of a by b, where the sign of the remainder r follows the sign of a. Meanwhile, the “r = mod(a,b)” function finds the remainder after division of a by b, where the sign of the remainder r follows the sign of b.
For example, if you have a matrix of integer numbers that are positive only, you can find the even or odd numbers by first finding the matrix indices of these elements using “rem”:
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