Selecting numbers ending in a specific digit from a matrix

Hello,

I am trying to write a code that will select numbers from a file that end specifically in the numbers 4 or 9. The numbers are randomly generated and there are 10,000 numbers so the code needs to be able to be applied to the entire file

[Stephen23]

https://web.archive.org/web/20211210060504/https://www.mathworks.com/matlabcentral/answers/1607780-selecting-numbers-ending-in-a-specific-digit-from-a-matrix

Answer 1

[Chunru]

% Assume the numbers are integers
x = randi([-2000,2000], 100, 1);
% The number end with 4 or 9
x1 = mod(abs(x), 10);
idx = x1==4 | x1==9;
x(idx)

ans = 18×1

39 989 -779 1909 -1874 -1794 1479 1194 1704 -369