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(7) Instance method evaluate to evaluate a polynomial. This method accepts a parameter for x, evaluates the polynomial expression and returns the result. (8) Instance method add having a parameter p2 of type Polynomial to add two polynomial expressions, i.e., "this object" and p2 and return the result as an object of type Polynomial. Note that degree of both polynomials to be added, may be different. Ex: Let P = 1.2 x? + 2.1 x + 0.5 and Q = 1.5 x? + 1.4 x + 0.7, then ng a P+Q = (1.2 + 1.5) x² + (2.1 + 1.4) x + (0.5 + 0.7) = 2.7 x? + 3.5 x+ 1.2 import java.util.ArrayList; import java.util.stream.Collectors; import java.util.stream.DoubleStream; class Polynomial { // --- Required instance variables as mentioned in statement ArrayList poly; int degree; // - All other methods specified in question --- // -- Default constructor public Polynomial0{ this.poly = new ArrayList>(10); // -- ArrayList capacity to 10 this.degree = 0; // --- initialize degree to 0 } // - Constructor with parameters public Polynomial(double[] aPoly, int n){ this.poly = new ArrayList(n+1); // --- ArrayList poly capacity to n+1 degree = n; // --- initialize degree to n I| -- copying elements of array aPoly into ArrayList object poly poly = DoubleStream.of(aPoly).boxed(.collect(Collectors.toCollection(ArrayList:new)); } // --- getDegree method that returns value of degree public int getDegree() { return degree; } // --- addTerm method public void addTerm(double coefficient){ /| -- Inserting coefficient in poly poly.add(coefficient); } // updateTerm that accepts a newCoef of type double & also its power --- public double update Term(double newCoef, int pow){ return Math.pow(newCoef, pow); } }

(7) Instance method evaluate to evaluate a polynomial. This method accepts a parameter for x, evaluates the polynomial expression and returns the result. (8) Instance method add having a parameter p2 of type Polynomial to add two polynomial expressions, i.e., "this object" and p2 and return the result as an object of type Polynomial. Note that degree of both polynomials to be added, may be different. Ex: Let P = 1.2 x? + 2.1 x + 0.5 and Q = 1.5 x? + 1.4 x + 0.7, then ng a P+Q = (1.2 + 1.5) x² + (2.1 + 1.4) x + (0.5 + 0.7) = 2.7 x? + 3.5 x+ 1.2 import java.util.ArrayList; import java.util.stream.Collectors; import java.util.stream.DoubleStream; class Polynomial { // --- Required instance variables as mentioned in statement ArrayList poly; int degree; // - All other methods specified in question --- // -- Default constructor public Polynomial0{ this.poly = new ArrayList>(10); // -- ArrayList capacity to 10 this.degree = 0; // --- initialize degree to 0 } // - Constructor with parameters public Polynomial(double[] aPoly, int n){ this.poly = new ArrayList(n+1); // --- ArrayList poly capacity to n+1 degree = n; // --- initialize degree to n I| -- copying elements of array aPoly into ArrayList object poly poly = DoubleStream.of(aPoly).boxed(.collect(Collectors.toCollection(ArrayList:new)); } // --- getDegree method that returns value of degree public int getDegree() { return degree; } // --- addTerm method public void addTerm(double coefficient){ /| -- Inserting coefficient in poly poly.add(coefficient); } // updateTerm that accepts a newCoef of type double & also its power --- public double update Term(double newCoef, int pow){ return Math.pow(newCoef, pow); } }

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Data Structure

Add this two methods for the following class

 

(7) Instance method evaluate to evaluate a polynomial. This method accepts a parameter for x, evaluates the polynomial expression and returns the result. (8) Instance method add having a parameter p2 of type Polynomial to add two polynomial expressions, i.e., "this object" and p2 and return the result as an object of type Polynomial. Note that degree of both polynomials to be added, may be different. Ex: Let P = 1.2 x? + 2.1 x + 0.5 and Q = 1.5 x? + 1.4 x + 0.7, then ng a P+Q = (1.2 + 1.5) x² + (2.1 + 1.4) x + (0.5 + 0.7) = 2.7 x? + 3.5 x+ 1.2
Transcribed Image Text:(7) Instance method evaluate to evaluate a polynomial. This method accepts a parameter for x, evaluates the polynomial expression and returns the result. (8) Instance method add having a parameter p2 of type Polynomial to add two polynomial expressions, i.e., "this object" and p2 and return the result as an object of type Polynomial. Note that degree of both polynomials to be added, may be different. Ex: Let P = 1.2 x? + 2.1 x + 0.5 and Q = 1.5 x? + 1.4 x + 0.7, then ng a P+Q = (1.2 + 1.5) x² + (2.1 + 1.4) x + (0.5 + 0.7) = 2.7 x? + 3.5 x+ 1.2
import java.util.ArrayList; import java.util.stream.Collectors; import java.util.stream.DoubleStream; class Polynomial { // --- Required instance variables as mentioned in statement ArrayList<Double> poly; int degree; // - All other methods specified in question --- // -- Default constructor public Polynomial0{ this.poly = new ArrayList>(10); // -- ArrayList capacity to 10 this.degree = 0; // --- initialize degree to 0 } // - Constructor with parameters public Polynomial(double[] aPoly, int n){ this.poly = new ArrayList(n+1); // --- ArrayList poly capacity to n+1 degree = n; // --- initialize degree to n I| -- copying elements of array aPoly into ArrayList object poly poly = DoubleStream.of(aPoly).boxed(.collect(Collectors.toCollection(ArrayList:new)); } // --- getDegree method that returns value of degree public int getDegree() { return degree; } // --- addTerm method public void addTerm(double coefficient){ /| -- Inserting coefficient in poly poly.add(coefficient); } // updateTerm that accepts a newCoef of type double & also its power --- public double update Term(double newCoef, int pow){ return Math.pow(newCoef, pow); } }
Transcribed Image Text:import java.util.ArrayList; import java.util.stream.Collectors; import java.util.stream.DoubleStream; class Polynomial { // --- Required instance variables as mentioned in statement ArrayList<Double> poly; int degree; // - All other methods specified in question --- // -- Default constructor public Polynomial0{ this.poly = new ArrayList>(10); // -- ArrayList capacity to 10 this.degree = 0; // --- initialize degree to 0 } // - Constructor with parameters public Polynomial(double[] aPoly, int n){ this.poly = new ArrayList(n+1); // --- ArrayList poly capacity to n+1 degree = n; // --- initialize degree to n I| -- copying elements of array aPoly into ArrayList object poly poly = DoubleStream.of(aPoly).boxed(.collect(Collectors.toCollection(ArrayList:new)); } // --- getDegree method that returns value of degree public int getDegree() { return degree; } // --- addTerm method public void addTerm(double coefficient){ /| -- Inserting coefficient in poly poly.add(coefficient); } // updateTerm that accepts a newCoef of type double & also its power --- public double update Term(double newCoef, int pow){ return Math.pow(newCoef, pow); } }
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