Write a JAVA program that declares an array numList of 100 elements of type int.

Question

Write a JAVA program that declares an array numList of 100 elements of type int. Initialize the array with random numbers between 1 and 500. Then write three user-defined methods as follows.

-Write a method that takes as its parameter as int array, and outputs the array so that 10 elements per line are printed.

-Write a method that takes as its parameter as int array, and returns the average of the elements in the array as a double.

-Write a method that takes as its parameter as int array, and returns the index of the smallest element in the array.

Then in main method, call these user-defined methods with appropriate parameters and output the results.

Explanation / Answer

import java.util.*;

class arr_numList
{
   public static void print(int a[])
   {

       int i,n=0;
       for(i=0;i<100;i++)
       {
           if(n==10)
           {
              

System.out.println();
               n=0;
           }
           else
           {
               System.out.print

(a[i]+",");
               n++;
           }
       }

   }

   public static double aver(int a[])
   {
       int i,sum=0;
       for(i=0;i<100;i++)
       {
           sum=sum+a[i];
       }
       return sum/100;
   }
   public static int min(int a[])
   {
       int b=0,i,m=a[0];
       for(i=0;i<100;i++)
       {
           if(a[i]<m)
           {
               m=a[i];
               b=i;

           }
       }
       return b;
   }

   public static void main(String args[])
   {
       int numList[]=new int[100];
       int i;
       Random ra= new Random();

       for(i=0;i<100;i++)
       {
           numList[i]=(ra.nextInt

(500)+1);
       }

       print(numList);
       double av=aver(numList);
       System.out.println("Average ="+av);
       int ind=min(numList);
       System.out.println("Index of Smallest

element is = "+ind);
          
   }
}

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