com.ge.research.utils
Class MathUtils

java.lang.Object
  com.ge.research.utils.MathUtils

public class MathUtils

extends java.lang.Object

A utility class with common, useful arithmetic methods for dealing with arrays of primitive numbers and Calendar objects.

Version:

$Revision: 1.1 $ $Date: 2006/08/11 00:17:39 $

Author:

garbiras

Created on:

Aug 20, 2002

Constructor Summary

MathUtils()

Method Summary

static java.util.Calendar	getMax(java.util.Calendar[] values) Returns the max of the values of the Calendar array.
static double	getMax(double[] values) Returns the max of the values of the double array.
static float	getMax(float[] values) Returns the max of the values of the float array.
static int	getMax(int[] values) Returns the max of the values of the int array.
static long	getMax(long[] values) Returns the max of the values of the long array.
static short	getMax(short[] values) Returns the max of the values of the short array.
static float	getMean(double[] values) Returns the mean of the values of the double array.
static float	getMean(float[] values) Returns the mean of the values of the float array.
static float	getMean(int[] values) Returns the mean of the values of the int array.
static float	getMean(long[] values) Returns the mean of the values of the long array.
static float	getMean(short[] values) Returns the mean of the values of the short array.
static java.util.Calendar	getMedian(java.util.Calendar[] values) Unimplemented method
static double	getMedian(double[] values) Unimplemented method
static float	getMedian(float[] values) Unimplemented method
static double	getMedian(int[] values) Unimplemented method
static double	getMedian(long[] values) Unimplemented method
static double	getMedian(short[] values) Unimplemented method
static java.util.Calendar	getMin(java.util.Calendar[] values) Returns the min of the values of the Calendar array.
static double	getMin(double[] values) Returns the min of the values of the double array.
static float	getMin(float[] values) Returns the min of the values of the float array.
static int	getMin(int[] values) Returns the min of the values of the int array.
static long	getMin(long[] values) Returns the min of the values of the long array.
static short	getMin(short[] values) Returns the min of the values of the short array.
static java.util.Calendar[]	getMode(java.util.Calendar[] values) Returns the Calendar array of the mode values for the Calendar array.
static double[]	getMode(double[] values) Returns the double array of the mode values for the double array.
static float[]	getMode(float[] values) Returns the float array of the mode values for the float array.
static int[]	getMode(int[] values) Returns the int array of the mode values for the int array.
static long[]	getMode(long[] values) Returns the long array of the mode values for the long array.
static short[]	getMode(short[] values) Returns the short array of the mode values for the short array.
static float	getSum(double[] values) Returns the sum of the values of the double array.
static float	getSum(float[] values) Returns the sum of the values of the float array.
static long	getSum(int[] values) Returns the sum of the values of the int array.
static long	getSum(long[] values) Returns the sum of the values of the long array.
static long	getSum(short[] values) Returns the sum of the values of the short array.
static java.util.Calendar	getVariance(java.util.Calendar[] values) Unimplemented method
static float	getVariance(double[] values) Unimplemented method
static float	getVariance(float[] values) Unimplemented method
static float	getVariance(int[] values) Unimplemented method
static float	getVariance(long[] values) Unimplemented method
static float	getVariance(short[] values) Unimplemented method
static boolean	hasMode(java.util.Calendar[] values) Tests the Calendar array for a mode value.
static boolean	hasMode(double[] values) Tests the double array for a mode value.
static boolean	hasMode(float[] values) Tests the float array for a mode value.
static boolean	hasMode(int[] values) Tests the int array for a mode value.
static boolean	hasMode(long[] values) Tests the long array for a mode value.
static boolean	hasMode(short[] values) Tests the short array for a mode value.

Methods inherited from class java.lang.Object

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

Constructor Detail

MathUtils

public MathUtils()

Method Detail

getSum

public static long getSum(int[] values)
                   throws java.lang.ArithmeticException

Returns the sum of the values of the int array.

Parameters:

values - the array of values to sum

Returns:

The sum of the values of the array

Throws:

java.lang.ArithmeticException - If the running sum exceeds the maximum value for a primitive long

getSum

public static long getSum(short[] values)
                   throws java.lang.ArithmeticException

Returns the sum of the values of the short array.

Parameters:

values - the array of values to sum

Returns:

The sum of the values of the array

Throws:

java.lang.ArithmeticException - If the running sum exceeds the maximum value for a primitive long

getSum

public static long getSum(long[] values)
                   throws java.lang.ArithmeticException

Returns the sum of the values of the long array.

Parameters:

values - the array of values to sum

Returns:

The sum of the values of the array

Throws:

java.lang.ArithmeticException - If the running sum exceeds the maximum value for a primitive long

getSum

public static float getSum(double[] values)
                    throws java.lang.ArithmeticException

Returns the sum of the values of the double array.

Parameters:

values - the array of values to sum

Returns:

The sum of the values of the array

Throws:

java.lang.ArithmeticException - If the running sum exceeds the maximum value for a primitive long

getSum

public static float getSum(float[] values)
                    throws java.lang.ArithmeticException

Returns the sum of the values of the float array.

Parameters:

values - the array of values to sum

Returns:

The sum of the values of the array

Throws:

java.lang.ArithmeticException - If the running sum exceeds the maximum value for a primitive long

getMean

public static float getMean(int[] values)
                     throws java.lang.ArithmeticException

Returns the mean of the values of the int array.

Parameters:

values - the array of values to calcualte the mean for

Returns:

The mean of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero, or an exception is returned computing the sum of the array

See Also:

getSum(int[])

getMean

public static float getMean(short[] values)
                     throws java.lang.ArithmeticException

Returns the mean of the values of the short array.

Parameters:

values - the array of values to calcualte the mean for

Returns:

The mean of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero, or an exception is returned computing the sum of the array

See Also:

getSum(short[])

getMean

public static float getMean(long[] values)
                     throws java.lang.ArithmeticException

Returns the mean of the values of the long array.

Parameters:

values - the array of values to calcualte the mean for

Returns:

The mean of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero, or an exception is returned computing the sum of the array

See Also:

getSum(long[])

getMean

public static float getMean(double[] values)
                     throws java.lang.ArithmeticException

Returns the mean of the values of the double array.

Parameters:

values - the array of values to calcualte the mean for

Returns:

The mean of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero, or an exception is returned computing the sum of the array

See Also:

getSum(double[])

getMean

public static float getMean(float[] values)
                     throws java.lang.ArithmeticException

Returns the mean of the values of the float array.

Parameters:

values - the array of values to calcualte the mean for

Returns:

The mean of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero, or an exception is returned computing the sum of the array

See Also:

getSum(float[])

getMin

public static int getMin(int[] values)
                  throws java.lang.ArithmeticException

Returns the min of the values of the int array.

Parameters:

values - the array of values to calcualte the min for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMin

public static short getMin(short[] values)
                    throws java.lang.ArithmeticException

Returns the min of the values of the short array.

Parameters:

values - the array of values to calcualte the min for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMin

public static long getMin(long[] values)
                   throws java.lang.ArithmeticException

Returns the min of the values of the long array.

Parameters:

values - the array of values to calcualte the min for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMin

public static double getMin(double[] values)
                     throws java.lang.ArithmeticException

Returns the min of the values of the double array.

Parameters:

values - the array of values to calcualte the min for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMin

public static float getMin(float[] values)
                    throws java.lang.ArithmeticException

Returns the min of the values of the float array.

Parameters:

values - the array of values to calcualte the min for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMin

public static java.util.Calendar getMin(java.util.Calendar[] values)
                                 throws java.lang.ArithmeticException

Returns the min of the values of the Calendar array.

Parameters:

values - the array of values to calcualte the min for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMax

public static int getMax(int[] values)
                  throws java.lang.ArithmeticException

Returns the max of the values of the int array.

Parameters:

values - the array of values to calcualte the max for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMax

public static short getMax(short[] values)
                    throws java.lang.ArithmeticException

Returns the max of the values of the short array.

Parameters:

values - the array of values to calcualte the max for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMax

public static long getMax(long[] values)
                   throws java.lang.ArithmeticException

Returns the max of the values of the long array.

Parameters:

values - the array of values to calcualte the max for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMax

public static double getMax(double[] values)
                     throws java.lang.ArithmeticException

Returns the max of the values of the double array.

Parameters:

values - the array of values to calcualte the max for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMax

public static float getMax(float[] values)
                    throws java.lang.ArithmeticException

Returns the max of the values of the float array.

Parameters:

values - the array of values to calcualte the max for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

getMax

public static java.util.Calendar getMax(java.util.Calendar[] values)
                                 throws java.lang.ArithmeticException

Returns the max of the values of the Calendar array.

Parameters:

values - the array of values to calcualte the max for

Returns:

The min of the values of the array

Throws:

java.lang.ArithmeticException - If the array is of length zero

hasMode

public static boolean hasMode(int[] values)

Tests the int array for a mode value.

Parameters:

values - the array of values to inspect for a mode

Returns:

true if a mode exists for the array; false if a mode does not exist for the array

hasMode

public static boolean hasMode(short[] values)

Tests the short array for a mode value.

Parameters:

values - the array of values to inspect for a mode

Returns:

true if a mode exists for the array; false if a mode does not exist for the array

hasMode

public static boolean hasMode(long[] values)

Tests the long array for a mode value.

Parameters:

values - the array of values to inspect for a mode

Returns:

true if a mode exists for the array; false if a mode does not exist for the array

hasMode

public static boolean hasMode(double[] values)

Tests the double array for a mode value.

Parameters:

values - the array of values to inspect for a mode

Returns:

true if a mode exists for the array; false if a mode does not exist for the array

hasMode

public static boolean hasMode(float[] values)

Tests the float array for a mode value.

Parameters:

values - the array of values to inspect for a mode

Returns:

true if a mode exists for the array; false if a mode does not exist for the array

hasMode

public static boolean hasMode(java.util.Calendar[] values)

Tests the Calendar array for a mode value.

Parameters:

values - the array of values to inspect for a mode

Returns:

true if a mode exists for the array; false if a mode does not exist for the array

getMode

public static int[] getMode(int[] values)
                     throws java.lang.ArithmeticException,
                            java.lang.Exception

Returns the int array of the mode values for the int array.

Parameters:

values - the array of values to inspect for a mode

Returns:

The array of mode values for the array

Throws:

java.lang.ArithmeticException - If the array does not have a mode

java.lang.Exception - If an internal invalid state is reached while producing the mode array

getMode

public static short[] getMode(short[] values)
                       throws java.lang.ArithmeticException,
                              java.lang.Exception

Returns the short array of the mode values for the short array.

Parameters:

values - the array of values to inspect for a mode

Returns:

The array of mode values for the array

Throws:

java.lang.ArithmeticException - If the array does not have a mode

java.lang.Exception - If an internal invalid state is reached while producing the mode array

getMode

public static long[] getMode(long[] values)
                      throws java.lang.ArithmeticException,
                             java.lang.Exception

Returns the long array of the mode values for the long array.

Parameters:

values - the array of values to inspect for a mode

Returns:

The array of mode values for the array

Throws:

java.lang.ArithmeticException - If the array does not have a mode

java.lang.Exception - If an internal invalid state is reached while producing the mode array

getMode

public static double[] getMode(double[] values)
                        throws java.lang.ArithmeticException,
                               java.lang.Exception

Returns the double array of the mode values for the double array.

Parameters:

values - the array of values to inspect for a mode

Returns:

The array of mode values for the array

Throws:

java.lang.ArithmeticException - If the array does not have a mode

java.lang.Exception - If an internal invalid state is reached while producing the mode array

getMode

public static float[] getMode(float[] values)
                       throws java.lang.ArithmeticException,
                              java.lang.Exception

Returns the float array of the mode values for the float array.

Parameters:

values - the array of values to inspect for a mode

Returns:

The array of mode values for the array

Throws:

java.lang.ArithmeticException - If the array does not have a mode

java.lang.Exception - If an internal invalid state is reached while producing the mode array

getMode

public static java.util.Calendar[] getMode(java.util.Calendar[] values)
                                    throws java.lang.ArithmeticException,
                                           java.lang.Exception

Returns the Calendar array of the mode values for the Calendar array.

Parameters:

values - the array of values to inspect for a mode

Returns:

The array of mode values for the array

Throws:

java.lang.ArithmeticException - If the array does not have a mode

java.lang.Exception - If an internal invalid state is reached while producing the mode array

getMedian

public static double getMedian(int[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the median for

Returns:

0

UNIMPLEMENTED

Will compute the median value of the array, when finally implemented.

getMedian

public static double getMedian(short[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the median for

Returns:

0

UNIMPLEMENTED

Will compute the median value of the array, when finally implemented.

getMedian

public static double getMedian(long[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the median for

Returns:

0

UNIMPLEMENTED

Will compute the median value of the array, when finally implemented.

getMedian

public static double getMedian(double[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the median for

Returns:

0

UNIMPLEMENTED

Will compute the median value of the array, when finally implemented.

getMedian

public static float getMedian(float[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the median for

Returns:

0

UNIMPLEMENTED

Will compute the median value of the array, when finally implemented.

getMedian

public static java.util.Calendar getMedian(java.util.Calendar[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the median for

Returns:

null

UNIMPLEMENTED

Will compute the median value of the array, when finally implemented.

getVariance

public static float getVariance(int[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the variance for

Returns:

0

UNIMPLEMENTED

Will compute the variance of the array, when finally implemented.

getVariance

public static float getVariance(short[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the variance for

Returns:

0

UNIMPLEMENTED

Will compute the variance of the array, when finally implemented.

getVariance

public static float getVariance(long[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the variance for

Returns:

0

UNIMPLEMENTED

Will compute the variance of the array, when finally implemented.

getVariance

public static float getVariance(double[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the variance for

Returns:

0

UNIMPLEMENTED

Will compute the variance of the array, when finally implemented.

getVariance

public static float getVariance(float[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the variance for

Returns:

0

UNIMPLEMENTED

Will compute the variance of the array, when finally implemented.

getVariance

public static java.util.Calendar getVariance(java.util.Calendar[] values)

Unimplemented method

Parameters:

values - the array of values to calculate the variance for

Returns:

null

UNIMPLEMENTED

Will compute the variance of the array, when finally implemented.