NPTEL INTRODUCTION TO PROGRAMMING IN C WEEK 4 ANSWERS (JUL-DEC 2020)

 Question 1:

#include<stdio.h>

int main()

{

int arr1[100], arr2[100];

int n1,n2;

int check = 1;

int i;

  int k;

scanf("%d",&n1);

for( i = 0; i < n1; i++)

scanf("%d",&arr1[i]);

scanf("%d",&n2);

for( i = 0; i < n2; i++ )

scanf("%d",&arr2[i]);

for(i = 0; i < n1; i++)//sorting arr1.

{

for(int j = i; j < n1; j++)

{

if(arr1[j]>arr1[i])

{

int temp = arr1[i];

arr1[i] = arr1[j];

arr1[j] = temp;

}

}

}

for (int k = 0; k < n1; k++)//comparing arr1 and arr2.

{

check = 1;

for(i = 0; i < n2; i++)

{

if(arr1[k] == arr2[i])

{

check = 0;

break;

}

}

if(check == 1)

{

printf("%d",arr1[k] );

break;

}

}

if(check == 0)

printf("0");

return 0;

} 

Question 2:

#include<stdio.h>

int main()

{

int arr[100];

int n1,n2;

int counter = 0;

int i;

scanf("%d",&n1);

for( i = 0; i < n1; i++)

scanf("%d",&arr[i]);

for(i = 0; i < n1; i++)

{

for(int j = i; j < n1; j++)

{

if(arr[j]>arr[i])

{

int temp = arr[i];

arr[i] = arr[j];

arr[j] = temp;

}

}

}

for( i = 0; i < n1; i++)

{

if(arr[i] != arr[i+1])

counter++;

}

printf("%d",counter );

return 0;

}

Question 3:

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

char* replaceWord(const char* s, const char* oldW,

                  const char* newW)

{

    char* result;

    int i, cnt = 0;

    int newWlen = strlen(newW);

    int oldWlen = strlen(oldW);

    for (i = 0; s[i] != '\0'; i++) {

        if (strstr(&s[i], oldW) == &s[i]) {

            cnt++;

            i += oldWlen - 1;

        }

    }

    result = (char*)malloc(i + cnt * (newWlen - oldWlen) + 1);

    i = 0;

    while (*s) {

        if (strstr(s, oldW) == s) {

            strcpy(&result[i], newW);

            i += newWlen;

            s += oldWlen;

        }

        else

            result[i++] = *s++;

    }

    result[i] = '\0';

    return result;

}

int main()

{

    char str[100];

    char c[2];

    char d[10];

    char* result = NULL;

    scanf("%s",str);

    scanf("%s",c);

    scanf("%s",d);

    result = replaceWord(str, c, d);

    printf("%s", result);

    free(result);

    return 0;

}

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NPTEL PROGRAMMING IN C++ ASSIGNMENT WEEK 4 ANSWERS 2020(JUL-DEC)

 Question 1 :

#include <iostream>

using namespace std;

class B;             // LINE-1

class A {

    int a_ = 0;

public:

    A(int x) : a_(x) { }

    int addB(B&);

    int subtractB(B&);

};

class B {

    int b_ = 5;

public:

    friend class A;         // LINE-2

};

Question 2:

Complex operator *(const Complex &c) { // LINE-1

        int x, y;

        x = re*(c.re) - im*(c.im);            // LINE-2

        y = im*(c.re) + (c.im)*re;            // LINE-3

        Complex t1(x, y);

        return t1;

    }

Question 3:

        if(data == m1.data) m.data = 1;    // LINE-1

            return m;

    }

};

void fun(myClass m) { // LINE-2

Question 4:

#include <iostream>

using namespace std;

class myClass {

    int data;

    static myClass *t;        // LINE-1 Complete the declaration

    myClass(int x) : data(x) { }

public:

    static myClass *create(int x) {    // LINE-2 Mention return type of the function

        if (!t)

            t = new myClass(x);       // LINE-3 Allocate memory towards object t

            return t;

    }

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NPTEL PROGRAMMING IN JAVA WEEK 4 ANSWERS (JUL-DEC 2020)

 

QUESTION 1:

import java.io.*;
import java.util.*;
import static java.lang.System.*;

QUESTION 2:

// Create an object of Calendar class. 
java.util.Calendar current ;

// Use getInstance() method to initialize the Calendar object.
current = java.util.Calendar.getInstance();

// Initialize the int variable year with the current year
year = current.get(current.YEAR);

QUESTION 3:

interface ExtraLarge{
String extra = "This is extra-large";
void display();
}

class Large {
    public void Print() {
        System.out.println("This is large");
    }
}

class Medium extends Large {
    public void Print() {
       super.Print();  
        System.out.println("This is medium");
    }
}
class Small extends Medium {
    public void Print() {
        super.Print();  
        System.out.println("This is small");
    }
  }


class Question43 implements ExtraLarge{
    public static void main(String[] args) {
        Small s = new Small();
        s.Print();
  Question43 q = new Question43();
  q.display();
    }
  public void display(){
    System.out.println(extra);
  }
}

QUESTION 4:

// Call show() of First interface.

First.super.show();

// Call show() of Second interface.

Second.super.show();

QUESTION 5:

// Interface ShapeX is created

interface ShapeX {

 public String base = "This is Shape1";

 public void display1();

}

// Interface ShapeY is created which extends ShapeX

interface ShapeY extends ShapeX {

 public String base = "This is Shape2";

 public void display2();

}

// Class ShapeG is created which implements ShapeY

class ShapeG implements ShapeY {

 public String base = "This is Shape3";

 //Overriding method in ShapeX interface

 public void display1() {

  System.out.println("Circle: " + ShapeX.base);

 }

 // Override method in ShapeY interface

  public void display2(){

  System.out.println("Circle: " + ShapeY.base);}

}

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NPTEL PROGRAMMING IN C++ ASSIGNMENT WEEK 3 ANSWERS 2020(JUL-DEC) || CODE LINK IN THE COMMENTS

 Question 1:

 triangle(int b, int h) : _base(&b), _height(&h) { } // Line-1

    // LINE-1: Complete Constructor definition

    ~triangle() {

        _base = 0; // Line-2

        _height = 0;// LINE-2: Complete destructor to delete both data pointers

    }

    double area();

};

double triangle::area() {  // LINE-3: Complete function header

Question 2:

 mutable int _sem;        // LINE-1

public:

    Student(int roll, string name, int sem)

        : _roll(roll), _name(name), _sem(sem) { }

    void promote() const { // LINE-2

        _sem++;

    }

    void display() const{ // LINE-3

Question 3:

#include <iostream>

#include <string>

using namespace std;

class Complex {

    const int _r, _i;

public:

    Complex() : _r(0), _i(0){ }                       // LINE-1

    Complex(int r) : _r(r),_i(0) { }                  // LINE-2

    Complex(int r, int i) : _r(r), _i(i) { }           //          

Question 4 :

integer objA;  // LINE-1: Invoke Default Constructor

    integer objB(val);  // LINE-2: Invoke Parameterized Constructor

    integer objC = objB;  // LINE-3: Invoke Copy Constructor

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NPTEL PROGRAMMING IN JAVA WEEK 3 ANSWERS (JUL-DEC 2020)

QUESTION 1:

if (n<=1) 

            return (1-n); 

        return fib(n - 1) + fib(n - 2); 

QUESTION 2:

class Point{

   double x,y;

  

   public double distance(Point p1, Point p2)

                {

                  

                  double root=(p1.x-p2.x)*(p1.x-p2.x)+(p1.y-p2.y)*(p1.y-p2.y);

                  root=Math.sqrt(root);

                  System.out.print(root);

                  return root;

                }

}

QUESTION 3:

//Create a derived class constructor which can call the one parametrized constructor of the base class

double height;

Test1(double l, double h){

  super(l);

  this.length=l;

  this.height=h;

}

//Create a derived class constructor which can call the two parametrized constructor of the base class

Test1(double l, double b, double h){

  super(l,b);

  this.length=l;

  this.breadth=b;

  this.height=h;

}

  

  

//Override the method calculate() in the derived class to find the volume of a shape instead of finding the area of a shape

double calculate(){

  

  return length*breadth*height;}

QUESTION 4:

QuestionScope a= new QuestionScope();

System.out.println(a.sum(n1,n2));

System.out.print(QuestionScope.multiply(n1,n2));

QUESTION 5:

static void swap(Question obj)

        {

          int temp;

          temp=obj.e1;

          obj.e1=obj.e2;

          obj.e2=temp;

        }

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NPTEL INTRODUCTION TO PROGRAMMING IN C WEEK 3 ANSWERS (JUL-DEC 2020)

 Question 1:

#include<stdio.h>

int find_odd(int k)

{

  int num;

  int counter = 0;

  int check = 0;

  

  while(num != -1)

  {

    scanf("%d",&num);

    if(num%2!=0)

    {

      counter++;

      if(counter == k)

      {

        printf("%d",num);

        check = 1;

      }

    }

    

       

  }

   if((counter != k) && (check == 0))

      printf("-1");

  return 0;

}

int main()

{

  int k;

  scanf("%d",&k);

  find_odd(k);

  return 0;

}

Question 2:

#include<stdio.h>

int main()

{

  float num1,num2;

  float m_avg;

  

  scanf("%f",&num1);

  

  while(num1 != -1)

  {

    num2 = num1;

    scanf("%f",&num1);

      if(num1!=-1)

        { m_avg = (num1+num2)/2;

    printf("%0.1f ",m_avg);

        }

    

  }

  return 0;

}

    

Question 3:

#include<stdio.h>

int main()

{

  int n;

  scanf("%d",&n);

  int fac = 1;

  

  for(int i = 1; i<n; i++)

  {

    fac = fac*i; 

    if(fac <= n)

     {

        printf("%d ",fac);

      }

    else 

      break;

  }

  return 0;

  

}

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NPTEL PROGRAMMING IN JAVA WEEK 2 ANSWERS (JUL-DEC 2020)

 Question 1:

// Create an object of class Student

// Call 'print()' method of class Student 

// Create an object of class School

// Call 'print()' method of class School

Student obj = new Student();

obj.print();

School obj_1 = new School();

obj_1.print();

 Question 2:

// Create an object of class Printer

// Call 'print()' methods for desired output

Printer obj = new Printer();

obj.print("Hi! I am class STUDENT");

obj.print();

 Question 3:

// Define a method named 'studentMethod()' in class Question

// Call the method named 'print()' in class Question

void studentMethod(){

  

  Question23 obj = new Question23();

  print(obj);

}

 Question 4:

class Answer{

Answer(){

System.out.println("You got nothing.");

}

Answer(int marks, String type){

      this();

System.out.print("You got "+marks+" for an "+type);

}

}

 Question 5:

//Declare variable with name 'nptel', 'space' and 'java' and proper datatype.

//Initialize the variables with proper input

String nptel = "NPTEL", space = " ", java = "JAVA";

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