Question

CIST 2371 Introduction to Java
Unit 03 Lab
Due Date: ________
Part 1 – Using methods
Create a folder called Unit03 and put all your source files in this folder.
Write a program named Unit03Prog1.java. This program will contain a main() method and a
method called printChars() that has the following header:
public static void printChars(char c1, char c2)
The printChars() method will print out on the console all the characters between c1 and c2
inclusive. It will print 10 characters per line. (Hint: In order to add one to a char variable you can
use the '++' operator. This was covered in chapter 2.)
Your main() method ask the user to input the first and last character via the console. The user
should input lower case characters. If an upper case character is entered, convert it to lower
case. Then the main() method will call the printChars() method passing two characters. Here is a
sample test run:
> Please enter two characters: a w
Printing all characters between a and w
a b c d e f g h i j
k l m n o p q r s t
u v w
Part 2 – Using arrays
Write a program named Unit03Prog2.java. For this program you must use an array. This
program will read in 10 numbers from the user via the console. It will display on the console only
the distinct numbers, i.e. if a number appears multiple times in the input it is displayed only once.
(Hint: Read a number and store it into an array if it is new. If the number is already in the array,
ignore it. When done, print the array). Here is a sample test run:
Enter an integer: 2
Enter an integer: 6
Enter an integer: 1
Enter an integer: 8
Enter an integer: 6
Enter an integer: 1
Enter an integer: 2
Enter an integer: 4
Enter an integer: 7
Enter an integer: 5
The number of distinct values is 7
2 6 1 8 4 7 5
What To Turn In
You will zip up the Unit folder containing your source code files from both parts into a zip file
named Unit03_<your first initial><your lastname>.zip. For example Tom Swift's zip file would
look like this: Unit03_tswift.zip
Be sure to test this file before turning it in. Once you are satisfied that your zip file is OK, turn it
in via the ANGEL drop box for this Unit.

Answer 1

If you have any doubts, please give me comment...

import java.util.Scanner;

public class Unit03Prog1{

    public static void main(String[] args) {

        Scanner scnr = new Scanner(System.in);

        System.out.print("Please enter two characters: ");

        char c1 = scnr.next().charAt(0);

        char c2 = scnr.next().charAt(0);

        printChars(c1, c2);

    }

    public static void printChars(char c1, char c2){

        System.out.println("Printing all characters between "+c1+" and "+c2);

        int c = 1;

        for(char start=c1; start<=c2; start++){

            System.out.print(start);

            if(c%10==0)

                System.out.println();

            else

                System.out.print(" ");

            c++;

        }

        System.out.println();

    }

}

nagarajuanagaraju-Vostro-3550:30092019$ javac Unit03Prog1.java nagarajuanagaraju-Vostro-3550:30092019$ java Unit03Prog1 Please enter two characters: a w Printing all characters between a and w a b c def g h ij klm nopq r st u v w

2)

import java.util.Scanner;

public class Unit03Prog2{

    public static void main(String[] args) {

        Scanner scnr = new Scanner(System.in);

        int arr[] = new int[10];

        int n = 0;

        for(int i=0; i<10; i++){

            System.out.print("Enter an integer: ");

            int num = scnr.nextInt();

            boolean isExists = false;

            for(int j=0; j<i; j++){

                if(arr[j]==num){

                    isExists = true;

                    break;

                }

            }

            if(!isExists){

                arr[n] = num;

                n++;

            }

        }

        System.out.println("The nummber of distinct values is "+n);

        for(int i=0; i<n; i++){

            System.out.print(arr[i]+" ");

        }

        System.out.println();

    }

}

nagara ju@nagaraju-Vostro-3550 :30092019$ javac Unit03Prog2.java nagarajuanagaraju-Vostro-3550:30092019$ java Unit03Prog2 integer: 2 Enter an Enter an integer: 6 Enter an integer: 1 Enter an integer: 8 Enter an integer: 6 Enter an integer: 1 Enter an integer: 2 Enter an integer: 4 Enter an integer: 7 Enter an integer: 5 The nummber of distinct values is 7