kijuky

class FizzBuzz {
	public static void main(String[] args) {
		for (int i = 1; i <= 100; i++) {
			if (i % 3 == 0) {
				System.out.print("Fizz");
			}
			if (i % 5 == 0) {
				System.out.print("Buzz");
			}
			if (i % 3 != 0 && i % 5 != 0) {

kijuky

class FizzBuzz {
	public static void main(String[] args) {
		for (int i = 1; i <= 100; i++) {
			if (!new Buzz(new Fizz(i)).apply()) {
				System.out.print(i);
			}
			System.out.println();
		}
	}
}

kijuky

package test;

public class A {
	protected int i; // ← コンストラクタ起動時にこいつにアクセスすると IllegalAccessError
	public A(int i) {
		this.i = i;
	}
}

kijuky

package test;

public class A {
	protected int i; // ← コンストラクタ起動時にこいつにアクセスすると IllegalAccessError
	public A(int i) {
		this.i = i;
	}
}

kijuky

import groovyx.gpars.GParsPool

GParsPool.withPool {
  def array = ["+", "-", "*", "/"]
  def combi =  GroovyCollections.combinations((1..2).collectParallel{ array }) // arrayから2つ選びだす順列
  println combi //=> [[1, 1], [2, 1], [3, 1], [1, 2], [2, 2], [3, 2], [1, 3], [2, 3], [3, 3]]

  combi.each {
    def s = "1"
    def i = 2

kijuky

scala> def hashMap[K,V](e:java.util.Map.Entry[K,V]*)={
     | e.foldLeft(new java.util.HashMap[K,V]()) { (map, e) => map.put(e.getKey, e.getValue); map }
     | }
hashMap: [K, V](e: java.util.Map.Entry[K,V]*)java.util.HashMap[K,V]

scala> def $[K,V](k: K, v: V) = { new java.util.AbstractMap.SimpleEntry(k, v) }
$: [K, V](k: K, v: V)java.util.AbstractMap.SimpleEntry[K,V]

scala> hashMap($('a, 1), $('b, 2))
res1: java.util.HashMap[Symbol,Int] = {'a=1, 'b=2}

kijuky

scala> def rotate[T](l: List[T], dist: Int) = {
     | val _dist = (dist + (dist.abs / l.size + 1) * l.size) % l.size
     | l.drop(_dist) ++ l.take(_dist)
     | }
rotate: [T](l: List[T], dist: Int)List[T]

scala> rotate(List(1,2,3,4,5),0)
res13: List[Int] = List(1, 2, 3, 4, 5)

scala> rotate(List(1,2,3,4,5),1)

kijuky

scala> val v:Long = 3912657840L
v: Long = 3912657840
scala> (1 to 9).map { v % _ }
res1: scala.collection.immutable.IndexedSeq[Long] = Vector(0, 0, 0, 0, 0, 0, 0,
0, 0)
scala> val sv = "3912657840"
sv: java.lang.String = 3912657840
scala> sv.sliding(2).map { _.toInt }.map { v % _ }.toList
res2: List[Long] = List(0, 0, 0, 0, 0, 0, 0, 0, 0)

kijuky

public abstract class AC<T> {
	protected abstract void cannot_override(T... xs);
}

kijuky

// yield 版
IEnumerable<List<T>> Permutations<T>(IEnumerable<T> seq, int count)
{
  switch (count) {
  case 0: // special
    yield break;
  case 1: // terminate
    foreach (var t in seq)
      yield return t;
    yield break;