Package cern.jet.stat.quantile

Class DoubleBuffer

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable
    class DoubleBuffer
extends Buffer
    A buffer holding double elements; internally used for computing approximate quantiles.

    • Constructor Summary

      Constructors 
      Constructor Description
      DoubleBuffer​(int k)
      This method was created in VisualAge.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(double value)
      Adds a value to the receiver.
      void addAllOfFromTo​(DoubleArrayList elements, int from, int to)
      Adds a value to the receiver.
      protected void allocate()
      Allocates the receiver.
      void clear()
      Clears the receiver.
      java.lang.Object clone()
      Returns a deep copy of the receiver.
      boolean contains​(double element)
      Returns whether the specified element is contained in the receiver.
      boolean isEmpty()
      Returns whether the receiver is empty.
      boolean isFull()
      Returns whether the receiver is empty.
      int memory()
      Returns the number of elements currently needed to store all contained elements.
      double rank​(double element)
      Returns the rank of a given element within the sorted sequence of the receiver.
      int size()
      Returns the number of elements contained in the receiver.
      void sort()
      Sorts the receiver.
      java.lang.String toString()
      Returns a String representation of the receiver.

      • Methods inherited from class java.lang.Object

        equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • isSorted

        protected boolean isSorted

    • Constructor Detail

      • DoubleBuffer

        public DoubleBuffer​(int k)
        This method was created in VisualAge.
        Parameters:
        k - int

    • Method Detail

      • add

        public void add​(double value)
        Adds a value to the receiver.

      • addAllOfFromTo

        public void addAllOfFromTo​(DoubleArrayList elements,
                           int from,
                           int to)
        Adds a value to the receiver.

      • allocate

        protected void allocate()
        Allocates the receiver.

      • clear

        public void clear()
        Clears the receiver.
        Specified by:
        clear in class Buffer

      • clone

        public java.lang.Object clone()
        Returns a deep copy of the receiver.
        Overrides:
        clone in class PersistentObject
        Returns:
        a deep copy of the receiver.

      • contains

        public boolean contains​(double element)
        Returns whether the specified element is contained in the receiver.

      • isEmpty

        public boolean isEmpty()
        Returns whether the receiver is empty.
        Specified by:
        isEmpty in class Buffer

      • isFull

        public boolean isFull()
        Returns whether the receiver is empty.
        Specified by:
        isFull in class Buffer

      • memory

        public int memory()
        Returns the number of elements currently needed to store all contained elements. This number usually differs from the results of method size(), according to the underlying algorithm.

      • rank

        public double rank​(double element)
        Returns the rank of a given element within the sorted sequence of the receiver. A rank is the number of elements <= element. Ranks are of the form {1,2,...size()}. If no element is <= element, then the rank is zero. If the element lies in between two contained elements, then uses linear interpolation.
        Parameters:
        list - cern.colt.list.DoubleArrayList
        element - the element to search for
        Returns:
        the rank of the element.

      • size

        public int size()
        Returns the number of elements contained in the receiver.
        Specified by:
        size in class Buffer

      • sort

        public void sort()
        Sorts the receiver.
        Specified by:
        sort in class Buffer

      • toString

        public java.lang.String toString()
        Returns a String representation of the receiver.
        Overrides:
        toString in class java.lang.Object