import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); int[] a = new int[n]; for(int a_i=0; a_i < n; a_i++){ a[a_i] = in.nextInt(); } Arrays.sort(a); int minDiff = Integer.MAX_VALUE; for (int i = 0; i < n-1; i++) { int currDiff = Math.abs(a[i] - a[i+1]); if (currDiff < minDiff) { minDiff = currDiff; } } System.out.println(minDiff); } }