How to identify the 2 closest numbers in an array

Question

I want to write a program that identifies the 2 closest numbers in an int array and then prints their difference

Answer 1

Try this:
create 2 for loops like this

for (int i = 0; i < array.length; i++){
for (int j = i+1; j < array.length; j++){
//Your code here
}
}

Inside check to see the absolute difference of two array items like this
Math.abs(array[i] - array[j]);

Find the smallest difference and print it out.
This is one way to do it.

Answer 2

thank you that seems to be working well. It Can't handle a lot of numbers fast though .You know any other good method?