Second Highest Number

object prog4 {
def main(args: Array[String]): Unit = {
val arr = Array(20, 100, 80, 50)
var temp = 0
for(i <- arr.indices)
{
for(j <- i + 1 until arr.length) {
if(arr(i) < arr(j)) {
temp = arr(j)
arr(j) = arr(i)
arr(i) = temp
}
}
}
println("Second Highest Number is " + arr(1))
}
}