Commit: 5 - iPat_0.7.0 (svn)

Commit MetaInfo

• Revision: 5 (tree)
• Time: 2013-11-12 17:05:17
• Author: evakichi

Log Message

One more time.

Change Summary

• added: trunk/java/.classpath
• added: trunk/java/.project
• added: trunk/java/src/graph
• added: trunk/java/src/math/Tips.java
• added: trunk/java/src/math/Test.java
• added: trunk/java/src/math/Matrix.java
• added: trunk/java/src/math/Frac.java
• added: trunk/java/src/math
• added: trunk/java/src
• added: trunk/java
• added: trunk/site-lisp
• added: trunk
• added: branches
• added: tags

Incremental Difference

--- trunk/java/src/math/Tips.java	(nonexistent)
+++ trunk/java/src/math/Tips.java	(revision 5)
@@ -0,0 +1,25 @@
+/**
+ * 
+ */
+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);
+	}
+	
+
+}

--- trunk/java/src/math/Test.java	(nonexistent)
+++ trunk/java/src/math/Test.java	(revision 5)
@@ -0,0 +1,36 @@
+/**
+ * 
+ */
+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();
+		int a[]={1,2,3};
+		int b[][]={{1,2,3},{2,3,4},{3,4,5}};
+		Matrix.printVector(Matrix.multMatrix(a, b));
+		Matrix.printMatrix(Matrix.multMatrix(b, b));
+		
+	}
+
+}

--- trunk/java/src/math/Matrix.java	(nonexistent)
+++ trunk/java/src/math/Matrix.java	(revision 5)
@@ -0,0 +1,54 @@
+/**
+ * 
+ */
+package math;
+
+/**
+ * @author ishihara
+ *
+ */
+public class Matrix {
+	public static void printVector(int[] v)
+	{
+		for(int i=0;i<v.length;i++)
+			System.out.print(v[i]+" ");
+		System.out.println();
+	}
+	public static void printMatrix(int[][] m)
+	{
+		for(int i=0;i<m.length;i++)
+		{
+			for(int j=0;j<m[i].length;j++)
+				System.out.print(m[i][j]+" ");
+			System.out.println();
+		}
+		System.out.println();
+	}
+
+	public static int[] multMatrix(int a[],int b[][])
+	{
+		int c[]=new int[a.length];
+		for(int i=0;i<a.length;i++)
+		{
+			c[i]=0;
+			for(int j=0;j<b.length;j++)
+			{
+				c[i]+=a[j]*b[j][i];
+			}
+		}	
+		return c;
+	}
+
+	public static int[][] multMatrix(int a[][],int b[][])
+	{
+		int c[][]=new int[a.length][b[0].length];
+		for(int i=0;i<a.length;i++)
+			for(int j=0;j<b.length;j++)
+			{
+				c[i][j]=0;
+				for(int k=0;k<b[i].length;k++)
+					c[i][j]+=a[i][k]*b[k][j];
+			}
+		return c;
+	}
+}

--- trunk/java/src/math/Frac.java	(nonexistent)
+++ trunk/java/src/math/Frac.java	(revision 5)
@@ -0,0 +1,64 @@
+/**
+ * 
+ */
+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());
+	}
+	
+	private int getNumerator(){return this.numerator;}
+	private int getDenominator(){return this.denominator;}
+
+	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!!");
+		}
+	}
+	
+}