object Day01 extends App{

  println("Age Till 65 Method")
  println("===========================================")
  ageTillSixtyFive("Cooper", 19)
  ageTillSixtyFive("Cooper", 65)
  ageTillSixtyFive("Cooper", 95)

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("Find Max Method")
  println("===========================================")
  println(findMax(7, 10))
  println(findMax(9399, 4383))
  println(findMax(1, 100))

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("Summer Winter Method")
  println("===========================================")
  println(summer_winter(15))
  println(summer_winter(33))
  println(summer_winter(97))
  println(summer_winter(100))

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("Check Speed Method")
  println("===========================================")
  checkSpeed(45)
  checkSpeed(60)
  checkSpeed(90)
  checkSpeed(119)
  checkSpeed(120)

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("Odd Even Method")
  println("===========================================")
  oddEven(10)

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("Sum of 3's and 5's Method")
  println("===========================================")
  println(sumOfThreesAndFives(20))
  println(sumOfThreesAndFives(28))
  println(sumOfThreesAndFives(96))

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("isPrime Method")
  println("===========================================")
  println(isPrime(7))
  println(isPrime(49))
  println(isPrime(97))

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("printPrimes Method")
  println("===========================================")
  printPrimes(100)

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("printPrimes Method")
  println("===========================================")
  sort(1,2,3)
  sort(1,3,2)

  sort(2,1,3)
  sort(2,3,1)

  sort(3,2,1)
  sort(3,1,2)

  //////////////////////////////////////////////////
  println()
  println()
  println()
  ////////////////////////////////////////////////////

  println("isPerfectNumber Method")
  println("===========================================")
  println(isPerfectNumber(28))






  // #1
  def ageTillSixtyFive(name: String, age: Int): Unit = {
    val currentYear = 2019
    println(s"Hello $name you will turn 65 in ${65 - age + currentYear}")
  }


  // #2
  def findMax(numberOne: Int, numberTwo: Int): Int = {
    if (numberOne > numberTwo) numberOne
    else numberTwo
  }


  // #3
  def summer_winter(number: Int): String = {
    if (number % 3 == 0 && number % 5 == 0) "SummerWinter"
    else if (number % 3 == 0) "Summer"
    else if (number % 5 == 0) "Winter"
    else number.toString
  }

  // #4
  def checkSpeed(speed: Int): Unit = {
    var points: Int = 0
    if (speed < 55) println("Ok")
    else {
      points = (speed - 55) / 5
      println(s"Points: $points")
    }
    if (points > 12) println("License Suspended")
  }


  // #5
  def oddEven(limit: Int): Unit = {
    var postFix = ""
    for(i <- 0 to limit) {
      if (i % 2 == 0) postFix = "Even"
      else postFix = "Odd"
      println(s"$i is $postFix")
    }
  }


  // #6
  def sumOfThreesAndFives(limit: Int): Int = {
    var sum = 0
    for (i <- 0 to limit) {
      if (i % 3 == 0 || i % 5 == 0) sum += i
    }
    sum
  }


  // #7
  def isPrime(number: Int): Boolean = {
    /* Logic = Start at 2 and proceed to half the number
     Ex.) isPrime(40)
     for loop ranges from 2 to 20
     if 40 % 2 == 0 then 40 is not prime
     if this failed the first time, say the number is now 30
     we proceed to the next number to search for a divisor that is not 1 nor the number itself.
     */
    var initialBool = true
    for (i <- 2 to (number / 2)) {
      if (number % i == 0) initialBool = false
    }
    initialBool
  }


  // #8
  def printPrimes(limit: Int): Unit = {
    for (i <- 0 to limit) {
      if (i > 1) {
        if (isPrime(i)) println(i)
      }
    }
  }

  // #9
  def sort(x: Int, y: Int, z: Int): Unit = {
    if (x > y && x > z && y > z) print(x,y,z)
    if (x > y && x > z && z > y) print(x,z,y)

    if (y > x && y > z && x > z) print(y,x,z)
    if (y > x && y > z && z > x) print(y,z,x)

    if (z > y && z > x && x > y) print(z,x,y)
    if (z > y && z > x && y > x) print(z,y,x)
    println()
  }