Question

Write a program to input 20 numbers. Find and print the largtest and smallest numbers within the array.​

Answer 1

Required Program :

import java.util.*;

class Greatest_Smallest

{

void main( )

{

Scanner sc=new Scanner(System.in);

int n[ ] = new int[20] , i, lar, sm;

System.out.println("Please enter 20 Numbers");

for(i = 0; i<10 ; i++)

n[i]=sc.nextInt();

lar=n[0];

sm=n[0];

for(i=1;i<10;i++)

{

if(n[i]>lar)

lar=n[i];

else if(n[i]<sm)

sm=n[i];

}

System.out.println("The Greatest Number entered by you Is "+lar);

System.out.println("The smallest number entered by you is "+sm);

}

}

Explaination :

• Line 1 : We have been using util package of java to begin the program.
• Line 3 : Start of class.
• Line 5 : Start of main method.
• Line 7 : Numbers are entered. Here i is index number, lar is the largest numbers and sm is the smallest numbers.
• Line 19 : Greatest numbers are displayed.
• Line 21 : Smallest numbers are displayed.
• Line 22 : End of main method.
• Line 23 : End of class.

Answer 2

Answer:

import java.util.Scanner; public class KboatSDAMinMaxSum { public static void main(String args[]) { Scanner in = new Scanner(System.in); int arr[] = new int[20]; System.out.println("Enter 20 numbers:"); for (int i = 0; i < 20; i++) { arr[i] = in.nextInt(); } int min = arr[0], max = arr[0], sum = 0; for (int i = 0; i < arr.length; i++) { if (arr[i] < min) min = arr[i]; if (arr[i] > max) max = arr[i]; sum += arr[i]; } System.out.println("Largest Number = " + max); System.out.println("Smallest Number = " + min); System.out.println("Sum = " + sum); } }