Coverage Summary for Class: Record (day06p2)

 package day06p2
 
 fun String.toRecord(): Record {
   val lines = lines()
   require(lines.size == 2) { lines.size }
   return Record(
     raceDuration = lines[0].toSingleNumber(),
     recordDistance = lines[1].toSingleNumber()
   )
 }
 
 fun String.toSingleNumber(): Long =
   this.asSequence().filter { it.isDigit() }.joinToString("").toLong()
 
 data class Record(val raceDuration: Long, val recordDistance: Long) {
   fun calcDistance(buttonHoldTime: Long): Long = buttonHoldTime * (raceDuration - buttonHoldTime)
   fun calcNumberOfWaysToBeatRecord(): Int = (0..raceDuration).count { calcDistance(it) > recordDistance }
 }