find all odd numbers in an array in matlab

To find all odd numbers in an array in MATLAB, you can use logical indexing with the modulus operator. You can create a logical array that is true for every element in the array that is odd, and then use that logical array to index into the original array to extract the odd numbers.

Here's an example code snippet that demonstrates this approach:

main.m
% Example array
A = [1, 2, 3, 4, 5, 6, 7, 8, 9];

% Logical indexing to find odd numbers
odds = mod(A, 2) == 1;  % Logical array that is true for odd numbers
odd_numbers = A(odds);  % Extract odd numbers using logical indexing

% Display the result
disp(odd_numbers)
267 chars
10 lines

This will output:

main.m
1     3     5     7     9
26 chars
2 lines

In this code, we first define an example array A with some integers. We then create a logical array odds that is true for every element of A that is odd. The mod function returns the remainder when each element of A is divided by 2, and the == 1 comparison is used to check if the remainder is equal to 1 (which means the element is odd).

We then use the logical array odds to index into the original array A using parentheses notation. This returns a new array odd_numbers that contains only the odd numbers from A.

Finally, we display the result using the disp function.