Question

Write a java program to find the second smallest element in the array WITHOUT USING SORTING! ICSE Class X

Sample output - {1,5,7,2,8,12,89,56,13};

Sample input-2

Answer 1

Java

// Java program to find smallest and second smallest elements

import java.io.*;

  

class SecondSmallest

{

    /* Function to print first smallest and second smallest

      elements */

    static void print2Smallest(int arr[])

    {

        int first, second, arr_size = arr.length;

  

        /* There should be atleast two elements */

        if (arr_size < 2)

        {

            System.out.println(" Invalid Input ");

            return;

        }

  

        first = second = Integer.MAX_VALUE;

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

        {

            /* If current element is smaller than first

              then update both first and second */

            if (arr[i] < first)

            {

                second = first;

                first = arr[i];

            }

  

            /* If arr[i] is in between first and second

               then update second  */

            else if (arr[i] < second && arr[i] != first)

                second = arr[i];

        }

        if (second == Integer.MAX_VALUE)

            System.out.println("There is no second" +

                               "smallest element");

        else

            System.out.println("The smallest element is " +

                               first + " and second Smallest" +

                               " element is " + second);

    }

  

    /* Driver program to test above functions */

    public static void main (String[] args)

    {

        int arr[] = {12, 13, 1, 10, 34, 1};

        print2Smallest(arr);

    }

}

/


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