Package org.hipparchus.stat

Class LongFrequency

java.lang.Object

org.hipparchus.stat.Frequency<Long>

org.hipparchus.stat.LongFrequency

All Implemented Interfaces:

Serializable

public class LongFrequency
extends Frequency<Long>

Maintains a frequency distribution of Long values.

Accepts byte, short, int, long primitive or Integer and Long values.

Integer values (byte, short, int, long, Integer, Long) are not distinguished by type, i.e. addValue(Long.valueOf(2)), addValue(2), addValue(2L) all have the same effect (similarly for arguments to getCount() etc.).

NOTE: byte and short values will be implicitly converted to int values by the compiler, thus there are no explicit overloaded methods for these primitive types.

The values are ordered using the default (natural order), unless a Comparator is supplied in the constructor.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
LongFrequency()	Default constructor.
LongFrequency(Comparator<? super Long> comparator)	Constructor allowing values Comparator to be specified.

Method Summary

Modifier and Type	Method	Description
void	addValue(int v)	Adds 1 to the frequency count for v.
long	getCount(int v)	Returns the number of values equal to v.
long	getCumFreq(int v)	Returns the cumulative frequency of values less than or equal to v.
double	getCumPct(int v)	Returns the cumulative percentage of values less than or equal to v (as a proportion between 0 and 1).
double	getPct(int v)	Returns the percentage of values that are equal to v (as a proportion between 0 and 1).
void	incrementValue(int v, long increment)	Increments the frequency count for v.

Methods inherited from class org.hipparchus.stat.Frequency

addValue, clear, entrySetIterator, equals, getCount, getCumFreq, getCumPct, getMode, getPct, getSumFreq, getUniqueCount, hashCode, incrementValue, merge, merge, toString, valuesIterator

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LongFrequency

public LongFrequency()

Default constructor.

LongFrequency

public LongFrequency(Comparator<? super Long> comparator)

Constructor allowing values Comparator to be specified.

Parameters:

comparator - Comparator used to order values

Method Detail

addValue

public void addValue(int v)

Adds 1 to the frequency count for v.

Parameters:

v - the value to add.

incrementValue

public void incrementValue(int v,
                           long increment)

Increments the frequency count for v.

Parameters:

v - the value to add.

increment - the amount by which the value should be incremented

getCount

public long getCount(int v)

Returns the number of values equal to v.

Parameters:

v - the value to lookup.

Returns:

the frequency of v.

getPct

public double getPct(int v)

Returns the percentage of values that are equal to v (as a proportion between 0 and 1).

Returns Double.NaN if no values have been added.

Parameters:

v - the value to lookup

Returns:

the proportion of values equal to v

getCumFreq

public long getCumFreq(int v)

Returns the cumulative frequency of values less than or equal to v.

Parameters:

v - the value to lookup.

Returns:

the proportion of values equal to v

getCumPct

public double getCumPct(int v)

Returns the cumulative percentage of values less than or equal to v (as a proportion between 0 and 1).

Returns Double.NaN if no values have been added.

Parameters:

v - the value to lookup

Returns:

the proportion of values less than or equal to v