Question

How to find the largest number in an array java?

Answer 1

Answer:

One of the ways is to sort the array, then print the last element of the sorted array.

In Java, you can make use of the following code

import java.util.Scanner;

public class Assignment{

public static void main(String [] args)

{

int n;

Scanner input = new Scanner(System.in);

System.out.print("Array Length: ");

n = input.nextInt();

int [] myarray = new int[n];

System.out.print("Input Array: ");

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

{

           myarray[i]=input.nextInt();

}

int temp;  

for (int i = 0; i < n; i++)  

       {  

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

           {  

               if (myarray[i] > myarray[j])  

               {  

                   temp = myarray[i];  

                   myarray[i] = myarray[j];  

                   myarray[j] = temp;  

               }  

           }  

       }  

           System.out.println(myarray[n - 1]);

       }

}

Explanation:

This line declares n as length of array

int n;

Scanner input = new Scanner(System.in);

This line prompts user length of array

System.out.print("Array Length: ");

This line gets the user input

n = input.nextInt();

An empty array pf length arrowed

int [] myarray = new int[n];

This line prompts user array elements

System.out.print("Input Array: ");

The following iteration gets array element from user

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

{

           myarray[i]=input.nextInt();

}

This line declares a temporary variable temp

int temp;

This iterations iterates through the elements of rge array

for (int i = 0; i < n; i++)  

       {  

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

           {  

The following if condition checks for the larger of two variables and swap their position

               if (myarray[i] > myarray[j])  

               {  

                   temp = myarray[i];  

                   myarray[i] = myarray[j];  

                   myarray[j] = temp;  

               }  

           }  

       }  

This line prints the largest number of the array

           System.out.println(myarray[n - 1]);