public class ArrayShuffle {

	public static void main(String[] args) {
		// Create an array of int 1 - 7
		Integer[] ints = { 1, 2, 3, 4, 5, 6, 7 };
		// Shuffle it
		ArrayShuffle.shuffle(ints);
		// Print the result
		System.out.println(java.util.Arrays.toString(ints));
	}

	/**
	 * Shuffle an array of type T
	 *
	 * @param <T> The type contained in the array
	 * @param array The array to be shuffled
	 */
	public static <T> void shuffle(T[] array) {
		for (int i = array.length; i > 1; i--) {
			T temp = array[i - 1];
			int randIx = (int) (Math.random() * i);
			array[i - 1] = array[randIx];
			array[randIx] = temp;
		}
	}
}