kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2022
//K.A

import java.io._
import scala.io.Source

object problem22 {
    def sum(acl : Int, s : String) : Int = s match {
        case null => acl
        case "" => acl

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%206
//K.A

import scala.math._

object problem06 {
    def sum(acl : Long, xs : List[Int]) : Long = xs match {
        case Nil => acl
        case y :: ys => sum(acl + pow(y,2).toLong, ys)
    }

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%207
//K.A

import scala.math._

object problem07 {
    def getPrime(cnt : Int) : Int = {
        val pr = 2 #:: Stream.from(3)
        pr.filter(i=> pr.takeWhile(j=> pow(j, 2) <= i).forall(i % _ > 0))(cnt - 1)
    }

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%208
//K.A

object problem08 {
    def calcSliceProduct(nums : String) : Int ={
        if (!nums.forall(_.isDigit)){
            println("数字でない文字がまじっています。")
            0
        }else{
            nums.map(_.asDigit).sliding(5).map(_.product).max

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%209
//K.A

import scala.math._

object problem09 {
    def pythagoras(mc : Int) : Int = {
        val pg = for (b <- 2 until mc; a <- 1 until b; c = mc - (a + b) if pow(a, 2) + pow(b, 2) == pow(c, 2)) yield a * b * c
        pg.sum
    }

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2010
//K.A

import scala.math._

object problem10 {
    def getSumPrime(max : Int) : Long = {
        lazy val pr : Stream[Int] = 2 #:: Stream.from(3).filter(i=> pr.takeWhile(j=> pow(j, 2) <= i).forall(i % _ > 0)).takeWhile(_ < max)
        pr.map(_.toLong).reduceLeft(_+_)
    }

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2013
//K.A

object problem13 {
    def calcSliceSum(nums : String) : String = {
        if (!nums.forall(_.isDigit)) {
            "数字でない文字がまじっています。"
        } else {
            nums.sliding(50,50).map(_.take(11).toLong).sum.toString.take(10)
        }

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2016
//K.A

import scala.math._

object problem16 {
    def getMtPNum(mp : Int) : String = {
        BigInt(2).pow(mp).toString.map(_.asDigit).sum.toString
    }
    def main(args : Array[String]) {

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2048
//K.A

import scala.math._

object problem48 {
    def getMtpSum(mn : Int) : String = {
        (1 to mn).map(i => BigInt(i).pow(i)).reduceLeft(_+_).toString.takeRight(10)
    }
    def main(args : Array[String]) {

kazua

//http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2019
//K.A

object problem19 {
    def getSunCnt : Int = {
        val dayCnt = List(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31)
        def mlf(st : Int, ed : Int) = for(y <- st to ed; m <- 1 to 12) yield if (if (m != 2 || (m == 2 && ((y % 100 == 0 && y % 400 != 0) || (y % 4 != 0)))) false else true) 29 else dayCnt(m - 1)

        val ml1900 = mlf(1900,1900)
        val ml = mlf(1901,2000)