Solved question on Bubble sort
Question 1
A class myArray contains an array of n integers (n<=100). The subscripts of the array elements vary from
0 to n-1. Some of the members of the class myArray are given below:
Class name : myArray
Data members/instance variables :
arr[ ] : integer array to store elements.
n : size of the array.
Member functions/methods :
myArray( int size ) : parameterized constructor to assign n=size and create the array.
void readArray( ) : to read n integers into the array arr[ ].
void BubSort( ) : sorts the array in descending order using Bubble sort method.
void displayArray( ) : displays n integers.
Specify the class myArray giving details of the constructors and functions void readArray( ), void
BubSort( ) and void displayArray( ). Write a main( ) function to create an object and call the functions
accordingly to input the array, print the array before and after sorting.
Solution:
import java.util.*;
class myArray
{
int arr[ ]; //array declaration
int n;
//parameterized constructor
myArray( int size )
{
n = size;
arr = new int[ n ]; //creating array
}//end constructor
void readArray( ) //function to input the array
{
Scanner sc = new Scanner( System . in );
for( int i = 0; i < n ; i++ )
{
System.out.print("Input a number for array = " );
arr[ i ] = sc . nextInt( );
}//end loop
}//end function
