TwoSmallest.java

import java.util.Scanner;
import java.util.ArrayList;

public class TwoSmallest{

    public static double getRealNumber(Scanner in, double term, int count) {
        System.out.println("enter real number");
        double num = Double.parseDouble (in.nextLine());

        if (count>=2 && num==term) return num;

        while (num == term){
            System.out.println(num+" [this is the terminating value, not part of the set of numbers]");
            System.out.println("Enter different number: ");
            num = Double.parseDouble (in.nextLine());
        }
        return num;
    }

    public static void main(String[] args) {

        System.out.println("java TwoSmallest ");
        System.out.println("type a terminating value (real number) ");
        Scanner in = new Scanner(System.in);
        ArrayList<Double> arl = new ArrayList<Double>();
        double term = Double.parseDouble (in.nextLine());
        System.out.println(term+" [this is the terminating value, not part of the set of numbers]");
        double secondSmallest=0, smallest=0, num=0;
        int count=0, index=0;
        while(true) {
            num = getRealNumber(in, term, count);
            if (count>=2 && num==term) break;
            while (num==term) {
                num = getRealNumber(in, term, count);
            }
            arl.add(num);
            count++;
        }
        //System.out.println(arl.toString());
        for (int i=0; i<arl.size(); i++) {
            if (i==0 || arl.get(i)<smallest) {
                smallest = arl.get(i);
                index = i;
            }
        }
        arl.remove(index); // remove the smallest number
        for (int i=0; i<arl.size(); i++) {
            if (i==0 || arl.get(i)<secondSmallest) {
                secondSmallest = arl.get(i);
                index = i;
            }
        }
        System.out.println("\nSmallest = "+smallest);
        System.out.println("Second smallest = "+secondSmallest);
    }
}