Question

Question 7
Write a program to create an array to store 10 integers and print the largest integer and
the smallest integer in that array.
​

Answer 1

Largest and Smallest Integers in an Array - Java

We will take user input of 10 integers using the Scanner class and the $\texttt{Scanner.nextInt()}$ method.

Then, we initialize two variables, $\texttt{largestInteger}$ and $\texttt{smallestInteger}$ with the first value in the array, which we have named $\texttt{integerList[]}$ here.

We loop through the array. If any number is larger than $\texttt{largestInteger}$, then we assign that to the variable. If any number is smaller than $\texttt{smallestInteger}$, we assign that to the variable.

Finally, we print the results.

$\rule{300}{1}$

ExtremeIntegers.java

import java.util.Scanner;       //Import Scanner

public class ExtremeIntegers {

   public static void main(String[] args) {

       Scanner sc = new Scanner(System.in);    //Create Scanner object

       int integerList[] = new int[10];    //Initialize an empty integer array

       for(int i = 0; i < 10; i++) {

           System.out.print("Enter integer ["+(i+1)+"]: ");

           integerList[i] = sc.nextInt();  //Take user input for integers

       }

       int smallestInteger = integerList[0];   //Initialize smallest integer

       int largestInteger = integerList[0];    //Initialize largest integer

       for(int i = 1; i < 10; i++) {   //Loop through array to find largest and smallest integers

           if(largestInteger < integerList[i]) {

               largestInteger = integerList[i];

           }

           

           if(smallestInteger > integerList[i]) {

               smallestInteger = integerList[i];

           }

       }

       //Print the results

       System.out.println("The largest integer is: "+largestInteger);

       System.out.println("The smallest integer is: "+smallestInteger);

   }

}

Answer 2

C Programming Language

Output:

How many elements:5

Enter the Array:

12

5  

35

25

28

The largest element is 35

The smallest element is 5

Explanation:

//set header file

#include<stdio.h>

//define a main method

int main()

{

 //declare integer type array variable

int a[50],i,n;

 //print the message

printf("How many elements:");

 //get input from the user

scanf("%d",&n);

 //print the message

printf("Enter the Array:\n");

 //set for loop to get elements from the user

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

 {

 scanf("%d",&a[i]);

 }

 //set two integer data type variables

 //and point them to the first element of the array

int largest=a[0];

 int smallest=a[0];

 //set for loop

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

{

   //check the largest element of the array

 if(a[i]>largest)

     //then assign the largest element into the variable

  largest=a[i];

   //check the smallest element of the array

 if(a[i]<smallest)

     //then assign the largest element into the variable

  smallest=a[i];

}

 //print the largest element with message

printf("The largest element is %d",largest);

 //print the smallest element with message

printf("\nThe smallest element is %d",smallest);

return 0;

}

The following are the description of the program.

• Firstly, set the required header file then, define the main method and inside it.
• Declare integer data type array variable 'a' then, declare two integer data type variables 'i' and 'n' and get input in the variable 'n' from the user.
• Set the for loop to get the elements of the array from the user in the array variable 'a'.
• Declare two variables 'largest' and 'smallest' to store the largest and the smallest element of the array then, point them to the 1st element of the array.
• Set the for loop statement, that store the largest and the smallest elements of the array.

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