HELP ON TWO SMALLEST: intro to CS Write your code in the file TwoSmallest.java.

Question

HELP ON TWO SMALLEST: intro to CS

Write your code in the file TwoSmallest.java. Write your test cases in assign2-testcases.txt. We wish to write a program that takes a set of numbers and determines which are the two smallest. Ask the user for the following information, in this order: A terminating value (real number). The user will enter this value again later, to indicate that he or she is finished providing input. A sequence of real numbers. Keep asking for numbers until the terminating value is entered. Compute and output the smallest and second-smallest real number, in that order. It is possible for the smallest and second-smallest numbers to be the same (if the sequence contains duplicate numbers)

Using the Io module

**in ALL cases of error on input, RE-ASK the user for the input until it is correctly entered.** for example meaning if they only input one number after terminating value, they must star over from the BEGINNING.

Explanation / Answer

import java.util.Scanner;

public class TwoSmallest {

   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       boolean flag = false; // to check whether user has entered at least 1 valid number
       int firstSmallest;
       int secondSmallest;
       int num;
       System.out.println("Enter set of numbers (-999 to stop)");
       // reading first input
       num = sc.nextInt();
       //initializing both with first num
       firstSmallest = num;
       secondSmallest = num;
       if(num!=-999)
           flag = true;
       while(num!=-999){
           if(num < secondSmallest){
               if(num < firstSmallest){
                   secondSmallest = firstSmallest;
                   firstSmallest = num;
               }else{
                   secondSmallest = num;
               }
           }
           num = sc.nextInt();
       }
       if(!flag)
           System.out.println("No input!!!");
       else{
           System.out.println("Two Smallest Numbers are: "+firstSmallest+" and "+secondSmallest);
       }
   }
}

/*

output:

Enter set of numbers (-999 to stop)
32
45
1
8
9
56
7
45
654
23
-999
Two Smallest Numbers are: 1 and 7

*/

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