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- isReducible boolean
	- Updated constructor
	- Improved reduce()
	- add() done
This commit is contained in:
HeshamTB 2020-08-30 17:05:07 +03:00
parent 5e256c44f8
commit 34e2031f4c
Signed by: Hesham
GPG Key ID: 74876157D199B09E
1 changed files with 55 additions and 10 deletions
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59
lab-0/src/Fraction.java
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@ -11,10 +11,16 @@ public class Fraction {
*/
public Fraction(int numerator, int denominator){
//This might get in recursive loop
if (isReducible(numerator, denominator)){
Fraction f = reduce(new Fraction(numerator, denominator));
this.numerator = f.numerator;
this.denominator = f.denominator;
}
else{
this.numerator = numerator;
this.denominator = denominator;
//reduce here
}
}
@ -35,8 +41,12 @@ public class Fraction {
*/
private Fraction reduce(Fraction oldFraction) {
if (isReducible(oldFraction)){
int gcd = GCD(oldFraction.numerator, oldFraction.denominator);
return new Fraction(oldFraction.numerator/gcd, oldFraction.denominator/gcd);
return new Fraction(oldFraction.numerator/gcd,
oldFraction.denominator/gcd);
}
else return oldFraction;
}
@ -46,7 +56,7 @@ public class Fraction {
* @param b Second value
* @return Greatest common divisor as Integer.
*/
private int GCD(int a, int b){
private static int GCD(int a, int b){
int gcd = 1;
for (int i = 1; i <= b && i <= a; i++){
@ -77,8 +87,15 @@ public class Fraction {
*/
public static Fraction add(Fraction fraction1, Fraction fraction2){
return null;
//new denominator
int mDenominatorResult = fraction1.denominator * fraction2.denominator;
int mNumerator1 = fraction1.numerator * fraction2.denominator;
int mNumerator2 = fraction2.numerator * fraction1.denominator;
//new numerator
int mNumeratorResult = mNumerator1 + mNumerator2;
//
return new Fraction(mNumeratorResult, mDenominatorResult);
}
/**
@ -97,6 +114,7 @@ public class Fraction {
/**
* string of the fraction in num/den form
* overrides global toString()
* @return fraction string
*/
public String toString(){
@ -112,9 +130,36 @@ public class Fraction {
*/
public String decimal(int digits){
double decimal = this.numerator / this.denominator;
return String.format("%."+digits, decimal);
return String.format("%."+digits, (double)this.numerator / this.denominator);
}
/**
* Check if fraction is in simplest terms.
* @param fraction Fraction object
* @return boolean
*/
private boolean isReducible(Fraction fraction){
int gcd = GCD(fraction.numerator, fraction.denominator);
if (gcd == 1) return false;
else return true;
}
/**
* Check if fraction is in simplest terms.
* @param numerator
* @param denominator
* @return boolean
*/
private boolean isReducible(int numerator, int denominator){
int gcd = GCD(numerator, denominator);
if (gcd == 1) return false;
else return true;
}
}