Coverage Summary for Class: Platform (day14p1)

 package day14p1
 
 fun String.toPlatform(): Platform = Platform(lineSequence().map { it.toMutableList() }.toList())
 
 data class Platform(val value: List<MutableList<Char>>) {
   fun tiltNorth(): Platform {
     val copy = copy()
 
     val numOfColumns = copy.value.first().size
 
     for (col in (0..<numOfColumns)) {
       for (row in copy.value.indices) {
         var currentRow = row
         while (currentRow > 0 && copy.value[currentRow - 1][col] == '.' && copy.value[currentRow][col] == 'O') {
           copy.value[currentRow - 1][col] = 'O'
           copy.value[currentRow][col] = '.'
           currentRow--
         }
       }
     }
 
     return copy
   }
 
   fun look(): String = value.joinToString("\n") { it.joinToString("") }
   fun calcTotalLoad(): Long {
     val numOfRows = value.size.toLong()
 
     return value.asSequence().mapIndexed { rowIndex, row ->
       val load = numOfRows - rowIndex
       row.sumOf { if (it == 'O') load else 0 }
     }.sum()
   }
 }