com.spun.util

Class NumberUtils

java.lang.Object

com.spun.util.NumberUtils

public class NumberUtils
extends Object

A static class of convenience functions for Manipulating numbers

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NumberUtils.Shuffler

Field Summary

Fields

Modifier and Type	Field and Description
static Random	RANDOM

Constructor Summary

Constructors

Constructor and Description
NumberUtils()

Method Summary

Modifier and Type	Method and Description
static double	convertDoubleToPercentage(double doub)
static double	convertPercentageToDouble(double percent)
static String	createRandomStringOfNumbers(int digits)
static boolean	doRandomPercentage(int i)
static boolean	equals(double one, double two, double delta)
static int	floor(double i)
static int	getMax(int value1, int value2)
static int	getNumberOfDigits(int number)
static int	getRandomInt(int minimum, int maximum) randomly chooses a number between the minimum and maximum Example: int grade = NumberUtils.getRandomInt(1,100);
static <T> T[]	getShuffled(T[] objects, int numberToReturn)
static boolean	isEven(int number)
static boolean	isIn(int check, int[] available)
static boolean	load(String i, boolean d)
static double	load(String i, double defaultValue)
static int	load(String i, int defaultValue) Loads an int from a String.
static int	load(String i, int defaultValue, boolean stripNonNumeric) Loads an int from a String.
static long	load(String i, long defaultValue) Loads an int from a String.
static int[]	loadArray(String summaryString, String seperator, int defaultWhenLoading)
static void	main(String[] args) a unit test of sorts
static double	setSignificantDigit(double onNumber, int digit)
static DoubleStream	toDoubleStream(double[] numbers)
static DoubleStream	toDoubleStream(Double[] numbers)
static DoubleStream	toDoubleStream(List<Double> numbers)
static IntStream	toIntStream(int[] numbers)
static IntStream	toIntStream(Integer[] numbers)
static IntStream	toIntStream(List<Integer> numbers)
static LongStream	toLongStream(List<Long> numbers)
static LongStream	toLongStream(long[] numbers)
static LongStream	toLongStream(Long[] numbers)
static Integer[]	wrapIntegers(int[] ints)

Methods inherited from class java.lang.Object

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

Field Detail

RANDOM

public static Random RANDOM

Constructor Detail

NumberUtils

public NumberUtils()

Method Detail

getMax

public static int getMax(int value1,
                         int value2)

load

public static int load(String i,
                       int defaultValue)

Loads an int from a String.

load

public static int load(String i,
                       int defaultValue,
                       boolean stripNonNumeric)

Loads an int from a String.

load

public static long load(String i,
                        long defaultValue)

Loads an int from a String.

load

public static double load(String i,
                          double defaultValue)

load

public static boolean load(String i,
                           boolean d)

loadArray

public static int[] loadArray(String summaryString,
                              String seperator,
                              int defaultWhenLoading)

setSignificantDigit

public static double setSignificantDigit(double onNumber,
                                         int digit)

main

public static void main(String[] args)

a unit test of sorts

doRandomPercentage

public static boolean doRandomPercentage(int i)

equals

public static boolean equals(double one,
                             double two,
                             double delta)

wrapIntegers

public static Integer[] wrapIntegers(int[] ints)

createRandomStringOfNumbers

public static String createRandomStringOfNumbers(int digits)

isIn

public static boolean isIn(int check,
                           int[] available)

isEven

public static boolean isEven(int number)

getShuffled

public static <T> T[] getShuffled(T[] objects,
                                  int numberToReturn)

getRandomInt

public static int getRandomInt(int minimum,
                               int maximum)

randomly chooses a number between the minimum and maximum

Example: int grade = NumberUtils.getRandomInt(1,100);

Parameters:

minimum - The lowest possible value (inclusive)

maximum - The highest possible value (inclusive)

Returns:

the random number

floor

public static int floor(double i)

getNumberOfDigits

public static int getNumberOfDigits(int number)

convertDoubleToPercentage

public static double convertDoubleToPercentage(double doub)

convertPercentageToDouble

public static double convertPercentageToDouble(double percent)

toIntStream

public static IntStream toIntStream(int[] numbers)

toIntStream

public static IntStream toIntStream(Integer[] numbers)

toIntStream

public static IntStream toIntStream(List<Integer> numbers)

toLongStream

public static LongStream toLongStream(long[] numbers)

toLongStream

public static LongStream toLongStream(Long[] numbers)

toLongStream

public static LongStream toLongStream(List<Long> numbers)

toDoubleStream

public static DoubleStream toDoubleStream(double[] numbers)

toDoubleStream

public static DoubleStream toDoubleStream(Double[] numbers)

toDoubleStream

public static DoubleStream toDoubleStream(List<Double> numbers)