Question

by netBeans C++ java

by netBeans C++ java

by netBeans C++ java

1. Answer the following question a) (4 marks) Write a Java method, which takes an integer array and two integers x and y as input parameters. The method should exchange the value in position x with the value in the position y in the array. Example: If x = 1, y=2 Input Array Output Array b) (4 marks) Write the main method to do the following: 1. Define an array, call it list, which contains the elements: 7,9, 2, 5, 10 2. Prompt and Read two integers n and m from user 3. Call the above method in (a) to exchange the values in positions n and m of list, Note: n and m should be within the range of the list length 4. Print the resultant array

Answer 1

2 3 4- import java.io.*; import java.util.Scanner: class Main { void exchange(int arr[], int x, int y) // swapping using temp variable int temp=arr[x]; arr[x]=arr[y]; arr[y]=temp; public static void main(String[] args) 12 13 int list[]={7,9,2,5,10}; //list containing mentioned elements int n,m; Main s1= new Main(): Il object of Student class Scanner myobj = new Scanner(System.in); do 16 17 18 19 28 System.out.println("Enter value of n and m: "); in=myobj.nextInt(); // take user input m=myObj.nextInt(); // take user input 23 24 25 26 27 28 }while(n<0 && m<0 && n5 && m>5); // to check range of n and m s1.exchange (list,n,m); // clling function for(int i=0;i<5;i++) //print System.out.print(list[i]+" "); }

Enter value of n and m: 7 9 5 2 10

 import java.io.*; import java.util.Scanner; class Main { void exchange(int arr[], int x, int y) { int temp=arr[x]; // swapping using temp variable arr[x]=arr[y]; arr[y]=temp; }      public static void main (String[] args)         {               int list[]={7,9,2,5,10}; //list containing mentioned elements           int n,m;                Main s1= new Main(); // object of Student class                 Scanner myObj = new Scanner(System.in);          do      {       System.out.println("Enter value of n and m : ");        n=myObj.nextInt(); // take user input   m=myObj.nextInt(); // take user input           }while(n<0 && m<0 && n>5 && m>5); // to check range of n and m      s1.exchange(list,n,m); // clling function       for(int i=0;i<5;i++) //print         System.out.print(list[i]+" ");         } }