OOP2

/* opdracht1.java - Opdracht 1 of OOP2, generic typing.

 Copyright 2015 Maarten Vangeneugden

	Licensed under the Apache License, Version 2.0 (the "License");

	you may not use this file except in compliance with the License.

	You may obtain a copy of the License at

	https://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software

	distributed under the License is distributed on an "AS IS" BASIS,

	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

	See the License for the specific language governing permissions and

	limitations under the License.*/

class opdracht1 {

		/**

		 * Generic function that will swap two values, based on the given indexes. After this, it prints the entire value, in the new order.

		 * @param array The array in which the swap needs to take place.

		 * @param i The index of the value that will be swapped with the value in j.

		 * @param j The index of the value that will be swapped with the value in i.

		 * @pre The array is a list of types that needs 2 objects to be swapped with each other.

		 * @post The array is equal to the given array, except for the values at the given indexes, which have been swapped.

		 * @exception IndexOutOfBoundsException Thrown when one or more given indexes do not appear in the given array.

		 * @exception NullPointerException The given array does not exist.

		 * @return No actual return value, but this function will print the new order of the array to the console.

		 */

		public static <T> void genericArraySwap(T[] array, int i, int j) {

				T tempValue = array[i]; // A temporary value is required to swap with another value.

				array[i] = array[j]; // Replacing i by j.

				array[j] = tempValue; // Replacing j by i

				for(T value : array) { // Looping through all values of the array.

						System.out.print(value + ", "); // Printing a value.

				}

				System.out.println(); // Simulating a RETURN.

		}

}