Java Array

Definition:

int[] arr1;
int[] arr1 = new int[ 10 ];
int[][] arr1 = new int[ 10 ][ 3 ];
int[] arr1 = { 1, 2, 3, 4, 5 };

Usage:

ans = arr1[ 0 ];
length = arr1.length;

Array sort:

String s = "987654321";
char[] c = s.toCharArray();
java.util.Arrays.sort( c );
System.out.println ( new String( c ) );