import java.io.{FileInputStream, File}

import scala.util.control.Breaks._
import scala.collection.mutable.ArrayBuffer

object Main extends App
{
    val file = new File("K:\\Temp\\primes.txt")
    val primeList = ArrayBuffer[Int]()
    val fis = new FileInputStream(file)
    var str = new StringBuffer
    var q = true
    while (q)
    {
        val dat = Array.fill[Byte](4096)(0)
        val read = fis.read(dat)
        if (read <= 0)
            q = false
        else
        {
            val data = new Array[Byte](read)
            System.arraycopy(dat, 0, data, 0, read)
            str.append(new String(data))
        }
    }
    fis.close

    for (s <- str.toString.drop(1).split(","))
        primeList += s.toInt

    val max = 1000000
    var longest = ArrayBuffer[Int]()
    var lLastPrime = 0

    for (i <- 0 until primeList.length)
    {
        breakable{
            val ab = ArrayBuffer[Int]()
            var lastPrime = 0
            var sum = 0
            for (n <- i until primeList.length)
            {
                sum += primeList(n)
                if (sum < max)
                {
                    ab += primeList(n)
                    lastPrime = sum
                }
                else
                {
                    if (primeList.contains(lastPrime) && ab.length > longest.length)
                    {
                        longest = ab
                        lLastPrime = lastPrime
                    }
                    break
                }
            }}
    }

    println(s"\nNum: $lLastPrime - ${longest.mkString(", ")}")
}