Package gnu.trove

Class TDoubleArrayList

  • All Implemented Interfaces:
    java.io.Externalizable, java.io.Serializable, java.lang.Cloneable

    public class TDoubleArrayList
    extends java.lang.Object
    implements java.io.Externalizable, java.lang.Cloneable
    A resizable, array-backed list of double primitives. Created: Sat Dec 29 14:21:12 2001
    Author:
    Eric D. Friedman, Rob Eden
    See Also:
    Serialized Form
    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected double[] _data
      the data of the list
      protected int _pos
      the index after the last entry in the list
      protected static int DEFAULT_CAPACITY
      the default capacity for new lists
    • Constructor Summary

      Constructors 
      Constructor Description
      TDoubleArrayList()
      Creates a new TDoubleArrayList instance with the default capacity.
      TDoubleArrayList​(double[] values)
      Creates a new TDoubleArrayList instance whose capacity is the greater of the length of values and DEFAULT_CAPACITY and whose initial contents are the specified values.
      TDoubleArrayList​(int capacity)
      Creates a new TDoubleArrayList instance with the specified capacity.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(double val)
      Adds val to the end of the list, growing as needed.
      void add​(double[] vals)
      Adds the values in the array vals to the end of the list, in order.
      void add​(double[] vals, int offset, int length)
      Adds a subset of the values in the array vals to the end of the list, in order.
      int binarySearch​(double value)
      Performs a binary search for value in the entire list.
      int binarySearch​(double value, int fromIndex, int toIndex)
      Performs a binary search for value in the specified range.
      void clear()
      Flushes the internal state of the list, resetting the capacity to the default.
      void clear​(int capacity)
      Flushes the internal state of the list, setting the capacity of the empty list to capacity.
      java.lang.Object clone()
      Returns a clone of this list.
      boolean contains​(double value)
      Searches the list for value
      void ensureCapacity​(int capacity)
      Grow the internal array as needed to accommodate the specified number of elements.
      boolean equals​(java.lang.Object other)
      Compares this list to another list, value by value.
      void fill​(double val)
      Fills every slot in the list with the specified value.
      void fill​(int fromIndex, int toIndex, double val)
      Fills a range in the list with the specified value.
      boolean forEach​(TDoubleProcedure procedure)
      Applies the procedure to each value in the list in ascending (front to back) order.
      boolean forEachDescending​(TDoubleProcedure procedure)
      Applies the procedure to each value in the list in descending (back to front) order.
      double get​(int offset)
      Returns the value at the specified offset.
      double getQuick​(int offset)
      Returns the value at the specified offset without doing any bounds checking.
      double getSet​(int offset, double val)
      Sets the value at the specified offset and returns the previously stored value.
      TDoubleArrayList grep​(TDoubleProcedure condition)
      Searches the list for values satisfying condition in the manner of the *nix grep utility.
      int hashCode()  
      int indexOf​(double value)
      Searches the list front to back for the index of value.
      int indexOf​(int offset, double value)
      Searches the list front to back for the index of value, starting at offset.
      void insert​(int offset, double value)
      Inserts value into the list at offset.
      void insert​(int offset, double[] values)
      Inserts the array of values into the list at offset.
      void insert​(int offset, double[] values, int valOffset, int len)
      Inserts a slice of the array of values into the list at offset.
      TDoubleArrayList inverseGrep​(TDoubleProcedure condition)
      Searches the list for values which do not satisfy condition.
      boolean isEmpty()
      Tests whether this list contains any values.
      int lastIndexOf​(double value)
      Searches the list back to front for the last index of value.
      int lastIndexOf​(int offset, double value)
      Searches the list back to front for the last index of value, starting at offset.
      double max()
      Finds the maximum value in the list.
      double min()
      Finds the minimum value in the list.
      void readExternal​(java.io.ObjectInput in)  
      double remove​(int offset)
      Removes the value at offset from the list.
      void remove​(int offset, int length)
      Removes length values from the list, starting at offset
      void reset()
      Sets the size of the list to 0, but does not change its capacity.
      void resetQuick()
      Sets the size of the list to 0, but does not change its capacity.
      void reverse()
      Reverse the order of the elements in the list.
      void reverse​(int from, int to)
      Reverse the order of the elements in the range of the list.
      void set​(int offset, double val)
      Sets the value at the specified offset.
      void set​(int offset, double[] values)
      Replace the values in the list starting at offset with the contents of the values array.
      void set​(int offset, double[] values, int valOffset, int length)
      Replace the values in the list starting at offset with length values from the values array, starting at valOffset.
      void setQuick​(int offset, double val)
      Sets the value at the specified offset without doing any bounds checking.
      void shuffle​(java.util.Random rand)
      Shuffle the elements of the list using the specified random number generator.
      int size()
      Returns the number of values in the list.
      void sort()
      Sort the values in the list (ascending) using the Sun quicksort implementation.
      void sort​(int fromIndex, int toIndex)
      Sort a slice of the list (ascending) using the Sun quicksort implementation.
      TDoubleArrayList subList​(int begin, int end)
      Returns a sublist of this list.
      double[] toNativeArray()
      Copies the contents of the list into a native array.
      void toNativeArray​(double[] dest, int offset, int len)
      Copies a slice of the list into a native array.
      double[] toNativeArray​(int offset, int len)
      Copies a slice of the list into a native array.
      java.lang.String toString()
      Returns a String representation of the list, front to back.
      void transformValues​(TDoubleFunction function)
      Transform each value in the list using the specified function.
      void trimToSize()
      Sheds any excess capacity above and beyond the current size of the list.
      void writeExternal​(java.io.ObjectOutput out)  
      • Methods inherited from class java.lang.Object

        finalize, getClass, notify, notifyAll, wait, wait, wait
    • Field Detail

      • _data

        protected double[] _data
        the data of the list
      • _pos

        protected int _pos
        the index after the last entry in the list
      • DEFAULT_CAPACITY

        protected static final int DEFAULT_CAPACITY
        the default capacity for new lists
        See Also:
        Constant Field Values
    • Constructor Detail

      • TDoubleArrayList

        public TDoubleArrayList()
        Creates a new TDoubleArrayList instance with the default capacity.
      • TDoubleArrayList

        public TDoubleArrayList​(int capacity)
        Creates a new TDoubleArrayList instance with the specified capacity.
        Parameters:
        capacity - an int value
      • TDoubleArrayList

        public TDoubleArrayList​(double[] values)
        Creates a new TDoubleArrayList instance whose capacity is the greater of the length of values and DEFAULT_CAPACITY and whose initial contents are the specified values.
        Parameters:
        values - an double[] value
    • Method Detail

      • ensureCapacity

        public void ensureCapacity​(int capacity)
        Grow the internal array as needed to accommodate the specified number of elements. The size of the array doubles on each resize unless capacity requires more than twice the current capacity.
        Parameters:
        capacity - an int value
      • size

        public int size()
        Returns the number of values in the list.
        Returns:
        the number of values in the list.
      • isEmpty

        public boolean isEmpty()
        Tests whether this list contains any values.
        Returns:
        true if the list is empty.
      • trimToSize

        public void trimToSize()
        Sheds any excess capacity above and beyond the current size of the list.
      • add

        public void add​(double val)
        Adds val to the end of the list, growing as needed.
        Parameters:
        val - an double value
      • add

        public void add​(double[] vals)
        Adds the values in the array vals to the end of the list, in order.
        Parameters:
        vals - an double[] value
      • add

        public void add​(double[] vals,
                        int offset,
                        int length)
        Adds a subset of the values in the array vals to the end of the list, in order.
        Parameters:
        vals - an double[] value
        offset - the offset at which to start copying
        length - the number of values to copy.
      • insert

        public void insert​(int offset,
                           double value)
        Inserts value into the list at offset. All values including and to the right of offset are shifted to the right.
        Parameters:
        offset - an int value
        value - an double value
      • insert

        public void insert​(int offset,
                           double[] values)
        Inserts the array of values into the list at offset. All values including and to the right of offset are shifted to the right.
        Parameters:
        offset - an int value
        values - an double[] value
      • insert

        public void insert​(int offset,
                           double[] values,
                           int valOffset,
                           int len)
        Inserts a slice of the array of values into the list at offset. All values including and to the right of offset are shifted to the right.
        Parameters:
        offset - an int value
        values - an double[] value
        valOffset - the offset in the values array at which to start copying.
        len - the number of values to copy from the values array
      • get

        public double get​(int offset)
        Returns the value at the specified offset.
        Parameters:
        offset - an int value
        Returns:
        an double value
      • getQuick

        public double getQuick​(int offset)
        Returns the value at the specified offset without doing any bounds checking.
        Parameters:
        offset - an int value
        Returns:
        an double value
      • set

        public void set​(int offset,
                        double val)
        Sets the value at the specified offset.
        Parameters:
        offset - an int value
        val - an double value
      • getSet

        public double getSet​(int offset,
                             double val)
        Sets the value at the specified offset and returns the previously stored value.
        Parameters:
        offset - an int value
        val - an double value
        Returns:
        the value previously stored at offset.
      • set

        public void set​(int offset,
                        double[] values)
        Replace the values in the list starting at offset with the contents of the values array.
        Parameters:
        offset - the first offset to replace
        values - the source of the new values
      • set

        public void set​(int offset,
                        double[] values,
                        int valOffset,
                        int length)
        Replace the values in the list starting at offset with length values from the values array, starting at valOffset.
        Parameters:
        offset - the first offset to replace
        values - the source of the new values
        valOffset - the first value to copy from the values array
        length - the number of values to copy
      • setQuick

        public void setQuick​(int offset,
                             double val)
        Sets the value at the specified offset without doing any bounds checking.
        Parameters:
        offset - an int value
        val - an double value
      • clear

        public void clear()
        Flushes the internal state of the list, resetting the capacity to the default.
      • clear

        public void clear​(int capacity)
        Flushes the internal state of the list, setting the capacity of the empty list to capacity.
        Parameters:
        capacity - an int value
      • reset

        public void reset()
        Sets the size of the list to 0, but does not change its capacity. This method can be used as an alternative to the clear method if you want to recyle a list without allocating new backing arrays.
        See Also:
        clear()
      • resetQuick

        public void resetQuick()
        Sets the size of the list to 0, but does not change its capacity. This method can be used as an alternative to the clear method if you want to recyle a list without allocating new backing arrays. This method differs from reset in that it does not clear the old values in the backing array. Thus, it is possible for getQuick to return stale data if this method is used and the caller is careless about bounds checking.
        See Also:
        reset(), clear(), getQuick(int)
      • remove

        public double remove​(int offset)
        Removes the value at offset from the list.
        Parameters:
        offset - an int value
        Returns:
        the value previously stored at offset.
      • remove

        public void remove​(int offset,
                           int length)
        Removes length values from the list, starting at offset
        Parameters:
        offset - an int value
        length - an int value
      • transformValues

        public void transformValues​(TDoubleFunction function)
        Transform each value in the list using the specified function.
        Parameters:
        function - a TDoubleFunction value
      • reverse

        public void reverse()
        Reverse the order of the elements in the list.
      • reverse

        public void reverse​(int from,
                            int to)
        Reverse the order of the elements in the range of the list.
        Parameters:
        from - the inclusive index at which to start reversing
        to - the exclusive index at which to stop reversing
      • shuffle

        public void shuffle​(java.util.Random rand)
        Shuffle the elements of the list using the specified random number generator.
        Parameters:
        rand - a Random value
      • clone

        public java.lang.Object clone()
        Returns a clone of this list. Since this is a primitive collection, this will be a deep clone.
        Overrides:
        clone in class java.lang.Object
        Returns:
        a deep clone of the list.
      • subList

        public TDoubleArrayList subList​(int begin,
                                        int end)
        Returns a sublist of this list.
        Parameters:
        begin - low endpoint (inclusive) of the subList.
        end - high endpoint (exclusive) of the subList.
        Returns:
        sublist of this list from begin, inclusive to end, exclusive.
        Throws:
        java.lang.IndexOutOfBoundsException - - endpoint out of range
        java.lang.IllegalArgumentException - - endpoints out of order (end > begin)
      • toNativeArray

        public double[] toNativeArray()
        Copies the contents of the list into a native array.
        Returns:
        an double[] value
      • toNativeArray

        public double[] toNativeArray​(int offset,
                                      int len)
        Copies a slice of the list into a native array.
        Parameters:
        offset - the offset at which to start copying
        len - the number of values to copy.
        Returns:
        an double[] value
      • toNativeArray

        public void toNativeArray​(double[] dest,
                                  int offset,
                                  int len)
        Copies a slice of the list into a native array.
        Parameters:
        dest - the array to copy into.
        offset - the offset of the first value to copy
        len - the number of values to copy.
      • equals

        public boolean equals​(java.lang.Object other)
        Compares this list to another list, value by value.
        Overrides:
        equals in class java.lang.Object
        Parameters:
        other - the object to compare against
        Returns:
        true if other is a TDoubleArrayList and has exactly the same values.
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object
      • forEach

        public boolean forEach​(TDoubleProcedure procedure)
        Applies the procedure to each value in the list in ascending (front to back) order.
        Parameters:
        procedure - a TDoubleProcedure value
        Returns:
        true if the procedure did not terminate prematurely.
      • forEachDescending

        public boolean forEachDescending​(TDoubleProcedure procedure)
        Applies the procedure to each value in the list in descending (back to front) order.
        Parameters:
        procedure - a TDoubleProcedure value
        Returns:
        true if the procedure did not terminate prematurely.
      • sort

        public void sort()
        Sort the values in the list (ascending) using the Sun quicksort implementation.
        See Also:
        Arrays.sort(int[])
      • sort

        public void sort​(int fromIndex,
                         int toIndex)
        Sort a slice of the list (ascending) using the Sun quicksort implementation.
        Parameters:
        fromIndex - the index at which to start sorting (inclusive)
        toIndex - the index at which to stop sorting (exclusive)
        See Also:
        Arrays.sort(int[])
      • fill

        public void fill​(double val)
        Fills every slot in the list with the specified value.
        Parameters:
        val - the value to use when filling
      • fill

        public void fill​(int fromIndex,
                         int toIndex,
                         double val)
        Fills a range in the list with the specified value.
        Parameters:
        fromIndex - the offset at which to start filling (inclusive)
        toIndex - the offset at which to stop filling (exclusive)
        val - the value to use when filling
      • binarySearch

        public int binarySearch​(double value)
        Performs a binary search for value in the entire list. Note that you must @{link #sort sort} the list before doing a search.
        Parameters:
        value - the value to search for
        Returns:
        the absolute offset in the list of the value, or its negative insertion point into the sorted list.
      • binarySearch

        public int binarySearch​(double value,
                                int fromIndex,
                                int toIndex)
        Performs a binary search for value in the specified range. Note that you must @{link #sort sort} the list or the range before doing a search.
        Parameters:
        value - the value to search for
        fromIndex - the lower boundary of the range (inclusive)
        toIndex - the upper boundary of the range (exclusive)
        Returns:
        the absolute offset in the list of the value, or its negative insertion point into the sorted list.
      • indexOf

        public int indexOf​(double value)
        Searches the list front to back for the index of value.
        Parameters:
        value - an double value
        Returns:
        the first offset of the value, or -1 if it is not in the list.
        See Also:
        for faster searches on sorted lists
      • indexOf

        public int indexOf​(int offset,
                           double value)
        Searches the list front to back for the index of value, starting at offset.
        Parameters:
        offset - the offset at which to start the linear search (inclusive)
        value - an double value
        Returns:
        the first offset of the value, or -1 if it is not in the list.
        See Also:
        for faster searches on sorted lists
      • lastIndexOf

        public int lastIndexOf​(double value)
        Searches the list back to front for the last index of value.
        Parameters:
        value - an double value
        Returns:
        the last offset of the value, or -1 if it is not in the list.
        See Also:
        for faster searches on sorted lists
      • lastIndexOf

        public int lastIndexOf​(int offset,
                               double value)
        Searches the list back to front for the last index of value, starting at offset.
        Parameters:
        offset - the offset at which to start the linear search (exclusive)
        value - an double value
        Returns:
        the last offset of the value, or -1 if it is not in the list.
        See Also:
        for faster searches on sorted lists
      • contains

        public boolean contains​(double value)
        Searches the list for value
        Parameters:
        value - an double value
        Returns:
        true if value is in the list.
      • grep

        public TDoubleArrayList grep​(TDoubleProcedure condition)
        Searches the list for values satisfying condition in the manner of the *nix grep utility.
        Parameters:
        condition - a condition to apply to each element in the list
        Returns:
        a list of values which match the condition.
      • inverseGrep

        public TDoubleArrayList inverseGrep​(TDoubleProcedure condition)
        Searches the list for values which do not satisfy condition. This is akin to *nix grep -v.
        Parameters:
        condition - a condition to apply to each element in the list
        Returns:
        a list of values which do not match the condition.
      • max

        public double max()
        Finds the maximum value in the list.
        Returns:
        the largest value in the list.
        Throws:
        java.lang.IllegalStateException - if the list is empty
      • min

        public double min()
        Finds the minimum value in the list.
        Returns:
        the smallest value in the list.
        Throws:
        java.lang.IllegalStateException - if the list is empty
      • toString

        public java.lang.String toString()
        Returns a String representation of the list, front to back.
        Overrides:
        toString in class java.lang.Object
        Returns:
        a String value
      • writeExternal

        public void writeExternal​(java.io.ObjectOutput out)
                           throws java.io.IOException
        Specified by:
        writeExternal in interface java.io.Externalizable
        Throws:
        java.io.IOException
      • readExternal

        public void readExternal​(java.io.ObjectInput in)
                          throws java.io.IOException,
                                 java.lang.ClassNotFoundException
        Specified by:
        readExternal in interface java.io.Externalizable
        Throws:
        java.io.IOException
        java.lang.ClassNotFoundException