How to find the index of a non-integer array with closest value to any integer?

Given an array of non-integers, how can you find which value in that array is closest to an integer (any integer)?

Example (1): Given an array, x, find the index where x is closest to an integer.

x = [3.75   22.95   2548.01   424.5]

Answer: x(3) is closest to an integer (it is 0.01 away from the integer 2548).

Example 2: Given an array, "a," find where "a" is closest to an integer.

% Define constants
theta = linspace(0,90,900000);
d = 0.02;
l = 632.8e-9;

% create the 1-D non-integer array
a = (2.*d.*cosd(theta))./l;

% Double check to see if there are any integers in the array "a"
finds =  find(array == floor(a));  % there are no integers -- "a" is all non-integers, which is why I need your help

Answer: I don't know and need your help!

Answer 1

[Bruno Luong]

 x = [3.75   22.95   2548.01   424.5]
 [~,i] = min(abs(x-round(x)))

[noMathWiz]

Thanks, bud!