Adding new problem statement of Polynomial based functions

Polynomial_Operations/Java/aayushKumarJarvis/Polynomial.java

@@ -0,0 +1,137 @@
+import java.util.Scanner;
+
+public class Polynomial {
+
+    int degreeOfPolynomial;
+    double[] coefficients;
+
+    public Polynomial() {
+
+    }
+
+    public Polynomial(int degree) {
+        this.degreeOfPolynomial = degree;
+        this.coefficients = new double[degree+1];
+
+        for(int loopingVariable = 0; loopingVariable<=getDegree(); loopingVariable++) {
+            this.coefficients[loopingVariable] = 0;
+        }
+    }
+
+    public int getDegree() {
+        return degreeOfPolynomial;
+    }
+
+
+    public String toString() {
+
+        String polynomialExpression = "";
+        int counter = 0;
+
+        while(counter-1!=getDegree()) {
+
+            if(counter == 0)
+                polynomialExpression += "+" + polynomialExpression + coefficients[0];
+            else
+                polynomialExpression = "+" + coefficients[counter] + "x^" + counter + polynomialExpression;
+
+            counter++;
+
+        }
+
+        return polynomialExpression;
+    }
+
+    public double evaluate(double x) {
+
+        double resultOfExpression = coefficients[0];
+
+        for(int loopVariable = 1; loopVariable<=getDegree(); loopVariable++) {
+            resultOfExpression = resultOfExpression + coefficients[loopVariable]*Math.pow(x,loopVariable);
+        }
+
+        return resultOfExpression;
+    }
+
+    public static Polynomial add() {
+
+        Scanner scannerObject = new Scanner(System.in);
+
+        System.out.println("Enter degree of 1st polynomial");
+        int degree1 = scannerObject.nextInt();
+        System.out.println("Enter the degree of 2nd polynomial");
+        int degree2 = scannerObject.nextInt();
+
+        int smallerDegree = degree1<degree2 ? degree1:degree2;
+
+        Polynomial objectForPolynomial1 = new Polynomial(degree1);
+        Polynomial objectForPolynomial2 = new Polynomial(degree2) ;
+        Polynomial objectForPolynomial3 = new Polynomial(smallerDegree);
+
+        System.out.println("Enter the values of coefficients for 1st polynomial");
+        for(int loopingVariable = 0;loopingVariable<=degree1;loopingVariable++)
+            objectForPolynomial1.coefficients[loopingVariable] = scannerObject.nextInt();
+        System.out.println("Enter the values of coeffcients for 2nd polynomial");
+        for(int loopingVariable = 0;loopingVariable<=degree2;loopingVariable++)
+            objectForPolynomial2.coefficients[loopingVariable] = scannerObject.nextInt();
+
+        for(int loopingVariable = 0; loopingVariable<=smallerDegree;loopingVariable++) {
+            objectForPolynomial3.coefficients[loopingVariable] = objectForPolynomial1.coefficients[loopingVariable] + objectForPolynomial2.coefficients[loopingVariable];
+        }
+
+       return objectForPolynomial3;
+    }
+
+    public static Polynomial multiply() {
+
+        Scanner scannerObject = new Scanner(System.in);
+        int greaterDegree;
+        int smallerDegree;
+
+        System.out.println("Enter the degree of 1st polynomial");
+        int degree1 = scannerObject.nextInt();
+        System.out.println("Enter the degree of 2nd polynomial");
+        int degree2 = scannerObject.nextInt();
+
+        if(degree1>degree2) {
+            greaterDegree = degree1;
+            smallerDegree = degree2;
+        }
+        else {
+            greaterDegree = degree2;
+            smallerDegree = degree1;
+        }
+
+        Polynomial objectForPolynomial1 = new Polynomial(greaterDegree);
+        Polynomial objectForPolynomial2 = new Polynomial(smallerDegree);
+        Polynomial objectForPolynomial3 = new Polynomial(greaterDegree+smallerDegree);
+
+        System.out.println("Enter the values of coefficients for 1st polynomial");
+        for(int loopingVariable = 0;loopingVariable<=greaterDegree;loopingVariable++)
+            objectForPolynomial1.coefficients[loopingVariable] = scannerObject.nextInt();
+        System.out.println("Enter the values of coeffcients for 2nd polynomial");
+        for(int loopingVariable = 0;loopingVariable<=smallerDegree;loopingVariable++)
+            objectForPolynomial2.coefficients[loopingVariable] = scannerObject.nextInt();
+
+        for(int loop1=0;loop1<=greaterDegree;loop1++) {
+            for(int loop2=0;loop2<=smallerDegree;loop2++) {
+                objectForPolynomial3.coefficients[loop1+loop2] = objectForPolynomial1.coefficients[loop1] * objectForPolynomial2.coefficients[loop2];
+            }
+        }
+
+        return objectForPolynomial3;
+    }
+
+    public static void main(String args[]) {
+
+        System.out.println("Testing add function");
+        Polynomial obj = add();
+        System.out.println(obj.coefficients[0]);
+
+        System.out.println("Testing multiply function");
+        obj.multiply();
+        System.out.println(obj.coefficients[0]);
+
+    }
+}
+

Polynomial_Operations/Java/aayushKumarJarvis/PolynomialTest.java

@@ -0,0 +1,45 @@
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class PolynomialTest extends Polynomial {
+
+    @Test
+    public void getDegreeTest() {
+
+        Polynomial objectForPolynomial = new Polynomial(5);
+        assertEquals(objectForPolynomial.degreeOfPolynomial,5);
+    }
+
+    @Test
+    public void toStringTest() {
+
+        Polynomial objectForPolynomial = new Polynomial(5);
+
+        objectForPolynomial.coefficients[0] = 1.0;
+        objectForPolynomial.coefficients[1] = 2.0;
+        objectForPolynomial.coefficients[2] = 3.0;
+        objectForPolynomial.coefficients[3] = 4.0;
+        objectForPolynomial.coefficients[4] = 5.0;
+        objectForPolynomial.coefficients[5] = 6.0;
+
+        String result = objectForPolynomial.toString();
+
+        assertEquals(result,"+6.0x^5+5.0x^4+4.0x^3+3.0x^2+2.0x^1+1.0");
+    }
+
+    @Test
+    public void evaluateTest() {
+
+        Polynomial objectForPolynomial = new Polynomial(2);
+
+        objectForPolynomial.coefficients[0] = 1.0;
+        objectForPolynomial.coefficients[1] = 2.0;
+        objectForPolynomial.coefficients[2] = 3.0;
+
+        double result = objectForPolynomial.evaluate(2.0);
+
+        assertEquals((int)result,17);
+    }
+
+}
+

Polynomial_Operations/Java/aayushKumarJarvis/tags.txt

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+Addition, Multiplication, Degree Finding of Polynomials.