MATLAB: Finding the largest index in an array that is divisible by a certain number

Question

Hi,

Given an nx1 array, I'm trying to get matlab to determine the largest index value which is divisible by a number (say 3), and then have matlab truncate the array to that point.

Any suggestions?

Thanks, Charles

Answer 1

divisor = 3;
new_array = old_array(1 : end - mod(end,divisor));