Question

I have an input:

aN b c
a1 a2 a3 ... aN

for example:

4 3 2
2 1 2 1 (I have here 'a' numbers, a = 4)
5 6 3
3 9 5 7 3 (I have here 'a' numbers, a = 5)
0 0 0

I want to stop reading an input when a or b or c will equal 0. I tried this:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;

/*
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public class Test {

    public static void main(String[] args) throws IOException {

        InputStreamReader converter = new InputStreamReader(System.in);
        BufferedReader in = new BufferedReader(converter);
        String line = "";
        int a = -1, b = -1, c = -1;
        LinkedList<Integer> list = new LinkedList<>();

        while (a != 0 && b != 0 && c != 0) 
        {
            line = in.readLine();
            String tmp[] = line.split(" ");
            a = Integer.parseInt(tmp[0]);
            b = Integer.parseInt(tmp[1]);
            c = Integer.parseInt(tmp[2]);
            System.out.println("a = " + a + ", b = " + b + ", c = " + c);
            line = in.readLine();
            list.clear();
            tmp = line.split(" ");
            for (int i = 0; i < tmp.length; i++) {
                list.add(new Integer(Integer.valueOf(tmp[i])));
            }
            System.out.println("List = 4 3 2" + list);   
        }   
    }        
}

but with this simple input:

4 3 2
2 1 2 1
5 6 3
3 9 5 7 3
0 0 0

even if I type 3 zeros, my program still waits for an input. How to improve it?

EDIT:

Guy you misunderstood. I NEED to have a second readline cause I need to read a second (fourth, sixth) line of input …

Answer 1

while (true) 
{
        line = in.readLine();
        String tmp[] = line.split(" ");
        a = Integer.parseInt(tmp[0]);
        b = Integer.parseInt(tmp[1]);
        c = Integer.parseInt(tmp[2]);
        if (a == 0 || b == 0 || c == 0) {
            break;
        }
        System.out.println("a = " + a + ", b = " + b + ", c = " + c);
        line = in.readLine();
        list.clear();
        tmp = line.split(" ");
        for (int i = 0; i < tmp.length; i++) {
            list.add(new Integer(Integer.valueOf(tmp[i])));
        }
        System.out.println("List = 4 3 2" + list);   
    }