1.

Given that the distance between any two points on a plane is calculated using the formula :

 

                               

 

(x2 – x1)²  + (y2 – y1)²

 

where x1,y1 denote coordinates of the first point & x2,y2 denote coordinates of the second point.

 

Create a class that will implement the following:

 

Class name            :               Point

Instance variables :               double x,y    (denote the coordinates of current Point object)

 

Methods :

public Point ()                                                       constructer

public void getPoint(double i,double j)              initializes coordinates to values of i & j

public void show()                                                 displays coordinates of current Point object

public double giveDist(Point p)                          computes & returns the distance between current Point object & p

 

2.

12 eggs make a dozen & 144 eggs make a gross.

 

Thus if total number of eggs is 200 , it can be subdivided into :

1 gross    ,   4 dozen  &  8 remaining.

 

Similarly , if total no. of eggs is 30 , it can be subdivided into :

0 gross    ,   2 dozen  &  6 remaining.

 

Using the above information create a class as follows :

class name             :               EggCounter

Instance variables :               int totcount   (denotes the total no. of eggs )

 

Methods :

public EggCounter()                                             constructer

public void getTotal(int x)                                   initializes totcount

public void compute()                                           calculates & displays how many gross , dozen & remaining

public void showTotal()                                        displays value of totcount

public void findTot(int gr,int doz,int rem)        does the opposite of  “public void compute()”

                                                                                i.e. accepts the total no. of gross(gr) , dozen(doz) & remaining

                                                                                (rem) & accordingly updates totcount.

 

3.

Task :     To compare any two Fraction objects & determine the greater of the two.

Class Name           :               Fraction

Instance variables :              num , den (both int)

 

Methods :

public Fraction()                                                   default constructer

public Fraction(int i,int j)                                   parameterized constructer

public void show()                                                 displays the greater Fraction object.

public Fraction giveGreater(Fraction f)            compares the current object with f & returns the greater of the two

public int findLcm(int x,int y)                            computes & returns the L.C.M. of x & y.

 

 

4.

Task :

To subdivide an amount of money into all possible denominations available in the Indian currency.

Example 1.

Amount – Rs. 4982

Output :

              4 1000 Rupee notes

              1  500 Rupee notes

4         100 Rupee notes

1   50 Rupee notes

1           20 Rupee notes

1           10 Rupee notes

1              2 Rupee notes

Example 2.

Amount – Rs. 321

Output :

3   100 Rupee notes

1              20 Rupee notes

1     1 Rupee notes                            

 

Class name           :             DenominationFinder

Instance variable    :             int num (represents the total amount of money

Methods              :

a)                 public DenominationFinder(int n)

b)                 public void findAndShow()

Computes all possible combinations & displays them.

c)                 public int givedenom(int x,int denom)

Returns the number of notes of denomination denom that x consists of.