Class Selection

  • public class Selection
    extends Object
    The Selection class provides static methods for sorting an array using selection sort. This implementation makes ~ ½ n2 compares to sort any array of length n, so it is not suitable for sorting large arrays. It performs exactly n exchanges.

    This sorting algorithm is not stable. It uses Θ(1) extra memory (not including the input array).

    For additional documentation, see Section 2.1 of Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne.

    Robert Sedgewick, Kevin Wayne
    • Method Detail

      • sort

        public static void sort​(Comparable[] a)
        Rearranges the array in ascending order, using the natural order.
        a - the array to be sorted
      • sort

        public static void sort​(Object[] a,
                                Comparator comparator)
        Rearranges the array in ascending order, using a comparator.
        a - the array
        comparator - the comparator specifying the order
      • main

        public static void main​(String[] args)
        Reads in a sequence of strings from standard input; selection sorts them; and prints them to standard output in ascending order.
        args - the command-line arguments