tminard

import scala.io.Source

var TAPE = Array.empty[Int]

// Instructions
val OP_ADD = 1
val OP_MUL = 2
val OP_END = 99

// Instruction Pointer

tminard

import scala.io.Source
import scala.collection.mutable.ListBuffer
import scala.math.{min,max,abs}

class Point(var x: Int, var y: Int) {

  override def toString = "x: " + x + ", y: " + y
  override def equals(o: Any) = o match {
    case that: Point => that.x == this.x && that.y == this.y
    case _ => false

tminard

val candidates = Array.range(272091, 815432)
println("Initial digits: " + candidates.size)

val filteredAsc = candidates.map(_.toString.toArray).filter(a => a.sameElements(a.sortBy(_.toInt)))
println("Total digits with ascending order: " + filteredAsc.size)

val filteredDupOnly = filteredAsc.filter(a => a.toSet.size < a.size)
println("Total digits with at least 2 adjacent equal values: " + filteredDupOnly.size)

val filteredDoubleOnly = filteredDupOnly.map(_.groupBy(identity).view.mapValues(_.size)).filter(m => m.exists(_._2 == 2))