Commit: 2 - iPat_0.7.0 (svn)

Commit MetaInfo

• Revision: 2 (tree)
• Time: 2013-11-12 08:52:08
• Author: evakichi

Log Message

first add

Change Summary

• added: java/src/graph
• added: java/src/math/Test.java
• added: java/src/math/Tips.java
• added: java/src/math/Frac.java
• added: java/src/math
• added: java/src

Incremental Difference

--- java/src/math/Test.java	(nonexistent)
+++ java/src/math/Test.java	(revision 2)
@@ -0,0 +1,31 @@
+/**
+ * 
+ */
+package math;
+
+/**
+ * @author ishihara
+ *
+ */
+public class Test {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		Frac f1 = new Frac(-3);
+		f1.printFrac();
+		Frac f2 = new Frac(2,3);
+		f2.printFrac();
+		Frac f3 = Frac.plus(f1, f2);
+		f3.printFrac();
+		Frac f4 = Frac.minus(f1, f2);
+		f4.printFrac();
+		Frac f5 = Frac.mult(f1, f2);
+		f5.printFrac();
+		Frac f6 = Frac.div(f1, f2);
+		f6.printFrac();
+	}
+
+}

--- java/src/math/Tips.java	(nonexistent)
+++ java/src/math/Tips.java	(revision 2)
@@ -0,0 +1,23 @@
+/**
+ * 
+ */
+package math;
+
+/**
+ * @author ishihara
+ *
+ */
+public class Tips {
+	public static int Gcd(int n1,int n2)
+	{
+		int m=Math.max(Math.abs(n1), Math.abs(n2));
+		int n=Math.min(Math.abs(n1), Math.abs(n2));
+		if (n==0)
+			return m;
+		int l=m%n;		
+		if(l==0)
+			return n;
+		else		
+			return Tips.Gcd(l, n);
+	}
+}

--- java/src/math/Frac.java	(nonexistent)
+++ java/src/math/Frac.java	(revision 2)
@@ -0,0 +1,66 @@
+/**
+ * 
+ */
+package math;
+
+/**
+ * @author ishihara
+ *
+ */
+public class Frac {
+	private int numerator;
+	private int denominator;
+
+	public Frac(int numerator)
+	{
+		this(numerator,1);
+	}
+	
+	public Frac(int numerator, int denominator)
+	{
+		this.numerator=numerator;
+		this.denominator=denominator;
+		reduction();
+	}
+	
+	public static Frac plus(Frac f1,Frac f2)
+	{
+		return new Frac(f1.getNumerator()*f2.getDenominator()+f1.getDenominator()*f2.getNumerator(),f1.getDenominator()*f2.getDenominator());
+	}
+
+	public static Frac minus(Frac f1,Frac f2)
+	{
+		return new Frac(f1.getNumerator()*f2.getDenominator()-f1.getDenominator()*f2.getNumerator(),f1.getDenominator()*f2.getDenominator());
+	}
+	
+	public static Frac mult(Frac f1,Frac f2)
+	{
+		return new Frac(f1.getNumerator()*f2.getNumerator(),f1.getDenominator()*f2.getDenominator());
+	}
+
+	public static Frac div(Frac f1,Frac f2)
+	{
+		return new Frac(f1.getNumerator()*f2.getDenominator(),f1.getDenominator()*f2.getNumerator());
+	}
+	
+	public int getNumerator(){return this.numerator;}
+	public int getDenominator(){return this.denominator;}
+
+	public Frac getFrac(){return this;}
+	
+	public void printFrac(){System.out.println(this.numerator+"/"+this.denominator);}
+	
+	private void reduction()
+	{
+		int g = Tips.Gcd(this.numerator, this.denominator);
+		try
+		{
+			this.numerator=this.numerator*(this.denominator/Math.abs(this.denominator))/g;
+			this.denominator=this.denominator*(this.denominator/Math.abs(this.denominator))/g;		
+		}catch(ArithmeticException e)
+		{
+			System.out.println("DIV 0!!");
+		}
+	}
+	
+}