Selection Sort in Java

import java.util.Comparator;

public class SelectionSort {

      /**

       * This method will sort the int type array in ascending order

       * @param array

       */

      public static void selectionSort(int[] a) {

            int length = a.length - 1;

            for (int x = 0; x < length; x++) {

                  int min = x;

                  for (int y = x + 1; y <= length; y++) {

                        if (a[y] < a[min]) {

                              min = y;

                        }

                  }

                  int tmp = a[x];

                  a[x] = a[min];

                  a[min] = tmp;

            }

      }

      /**

       * This method will sorts the array of object in ascending order which implements Comparable.

       * like String, Byte, Short, Integer, Long, Float, Double, Character,

       * Boolean, BigInteger, BigDecimal

       * @param <T>

       * @param array

       */

      public static <T extends Comparable<T>> void selectionSort(T[] a) {

            int length = a.length - 1;

            for (int x = 0; x < length; x++) {

                  int min = x;

                  for (int y = x + 1; y <= length; y++) {

                        if (a[y].compareTo(a[min]) < 0) {

                              min = y;

                        }

                  }

                  T tmp = a[x];

                  a[x] = a[min];

                  a[min] = tmp;

            }

      }

      /**

       * This method will sorts the array of objects based on provided comparator in ascending order.

       * @param <T>

       * @param array

       */

      public static <T> void selectionSort(T[] a, Comparator<T> c) {

            int length = a.length - 1;

            for (int x = 0; x < length; x++) {

                  int min = x;

                  for (int y = x + 1; y <= length; y++) {

                        if (c.compare(a[y], a[min]) < 0) {

                              min = y;

                        }

                  }

                  T tmp = a[x];

                  a[x] = a[min];

                  a[min] = tmp;

            }

      }

}