Class BigFraction

java.lang.Object
BigFraction
public class BigFraction
extends java.lang.Object
This is a class for the creation of immutible objects that represent fractions. Fractions are maintained in their reduced form with any negative in the numerator.

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static BigFraction HALF
    This is the BigFraction 1/2.
    static BigFraction ONE
    This is the BigFraction 1/1.
    static BigFraction TWO
    This is the BigFraction 2/1.
    static BigFraction ZERO
    This is the BigFraction 0/1.

  • Constructor Summary

    Constructors 
    Constructor Description
    BigFraction​(java.lang.String num, java.lang.String denom)
    This creates a BigFraction with the specified numerator and denominator
    BigFraction​(java.math.BigInteger num, java.math.BigInteger denom)
    This creates a BigFraction with the specified numerator and denominator

  • Method Summary

    Modifier and Type Method Description
    BigFraction add​(BigFraction that)
    This computes this + that.
    int compareTo​(BigFraction that)
    This compares this to that.
    BigFraction divide​(BigFraction that)
    This computes this / that.
    boolean equals​(java.lang.Object o)
    This checks for equality.
    BigFraction fractionalPart()
    This finds the fractional part of this BigFraction
    static void main​(java.lang.String[] args)  
    BigFraction multiply​(BigFraction that)
    This computes this * that.
    BigFraction pow​(int n)
    This raises this BigFraction to the nth power
    BigFraction subtract​(BigFraction that)
    This computes this - that.
    java.lang.String toString()
    This gives a string representation for this BigFraction of the form num/denom.
    static BigFraction valueOf​(long num, long denom)
    This static factory method creates a BigFraction from two specified longs.

    Methods inherited from class java.lang.Object

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

  • Field Details

  • Constructor Details

    • BigFraction

      public BigFraction​(java.math.BigInteger num, java.math.BigInteger denom)
      This creates a BigFraction with the specified numerator and denominator
      Parameters:
      num - The numerator we are giving this BigFraction
      denom - The denominator we are giving this BigFraction.
      Throws:
      java.lang.IllegalArgumentException - if a zero denominator is used.

    • BigFraction

      public BigFraction​(java.lang.String num, java.lang.String denom)
      This creates a BigFraction with the specified numerator and denominator
      Parameters:
      num - The numerator we are giving this BigFraction represented as a numerical string
      denom - The denominator we are giving this BigFraction represented asa numerical string.
      Throws:
      java.lang.IllegalArgumentException - if a zero denominator is used.

  • Method Details

    • toString

      public java.lang.String toString()
      This gives a string representation for this BigFraction of the form num/denom.
      Overrides:
      toString in class java.lang.Object
      Returns:
      a string containing num/denom

    • equals

      public boolean equals​(java.lang.Object o)
      This checks for equality.
      Overrides:
      equals in class java.lang.Object
      Parameters:
      o - an objec we are comapring this BigFraction to
      Returns:
      false if o is not a BigFraction, true if o is numerically equal to this BigFraction, and false otherwise.

    • add

      public BigFraction add​(BigFraction that)
      This computes this + that.
      Parameters:
      that - the BigFraction we are adding to this BigFraction.
      Returns:
      this + that

    • subtract

      public BigFraction subtract​(BigFraction that)
      This computes this - that.
      Parameters:
      that - the BigFraction we are adding to this BigFraction.
      Returns:
      this - that

    • multiply

      public BigFraction multiply​(BigFraction that)
      This computes this * that.
      Parameters:
      that - the BigFraction we are adding to this BigFraction.
      Returns:
      this * that

    • divide

      public BigFraction divide​(BigFraction that)
      This computes this / that.
      Parameters:
      that - the BigFraction we are adding to this BigFraction.
      Returns:
      this / that

    • pow

      public BigFraction pow​(int n)
      This raises this BigFraction to the nth power
      Parameters:
      n - an integer
      Returns:
      thisn

    • fractionalPart

      public BigFraction fractionalPart()
      This finds the fractional part of this BigFraction
      Returns:
      the fractional part of this BigFraction

    • valueOf

      public static BigFraction valueOf​(long num, long denom)
      This static factory method creates a BigFraction from two specified longs.
      Parameters:
      num - the numerator of this BigFraction
      denom - the denominator of this BigFraction

    • compareTo

      public int compareTo​(BigFraction that)
      This compares this to that.
      Parameters:
      that - a BigFraction we are comparing this BigFraction to.
      Returns:
      a positive integer if this > that, a negative integer if this < that, and 0 if this and that have the same numerical value.

    • main

      public static void main​(java.lang.String[] args)