language: Java (sun-jdk-1.7.0_10)
date: 259 days 6 hours ago
link:
visibility: public 
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import java.util.*;
import java.lang.*;
 
class Main
{
        public static void main (String[] args) throws java.lang.Exception
        {
int[] a = new int[] {4, 9, 1, 32, 13};
Arrays.sort(a);
int minDiff = a[1]-a[0];
for (int i = 2 ; i != a.length ; i++) {
    minDiff = Math.min(minDiff, a[i]-a[i-1]);
}
System.out.println(minDiff);
        }
}