noel-yap

class Entry {
  public final long base;
  public final long exponent;
  
  public Entry(long base, long exponent) {
    // 2⁷ > 100 so we start from the sixth power
    for (int e = 6; e > 1; --e) {
      final double pow = Math.pow(base, 1.0 / e);
      final long roundedPow = Math.round(pow);
      

noel-yap

public class Solution {
  // The sum of each square is:
  //   `1`; n == 1
  //   `4n² + n²-(n-1) + n²-2(n-1) + n²-3(n-1)`; n > 1
  //     or `4n² - 6(n-1)`
  //
  //   Substituting `n = 2k+1`:
  //     `Σ(k ≤ K)(4(2k+1)² - 6(2k+1-1))`
  //     `Σ(k ≤ K)(4(4k²+4k+1) - 12k)`
  //     `4Σ(k ≤ K)(4k²+4k+1 - 3k)`

noel-yap

import java.io.*;
import java.util.*;
import java.util.concurrent.*;

import org.junit.*;
import org.junit.runner.*;

public class LatticePaths {
  private final Map<RectangleDimensions, Integer> numberOfPathsMemo = new ConcurrentHashMap<RectangleDimensions, Integer>();
  

noel-yap

class Solution {
  /** Immutable closed range of array indices */
  private static class IndexRange {
    /** Inclusive start of range */
    public final int start;
    
    /** Inclusive end of range */
    public final int end;
    
    public IndexRange(final int start, final int end) {

noel-yap

// `-Prelease.auto-scope=true` for parameterless build jobs that publish (eg build PR jobs)
if (project.hasProperty('release.auto-scope') && project.properties['release.auto-scope'] == 'true') {
  project.ext['release.scope'] = releaseScope(file('CHANGELOG.md') as String[])
}

def releaseScope(String[] changelog) {
  final unreleased = (changelog
      .dropWhile {
    !(it =~ /^#+ +\[Unreleased\]/)
  }.takeWhile {

noel-yap

// Copied from https://github.com/Mahoney/slf4j-test/issues/3 and slightly modified.

import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.slf4j.event.Level;
import org.slf4j.event.LoggingEvent;
import org.slf4j.helpers.MessageFormatter;

public class LoggerMatcher {

noel-yap

#!/bin/bash

exec /opt/scala-2.10/bin/scala -feature "$0" "$@"
!#
import scala.annotation.tailrec
import scala.language.postfixOps

/**
 * From https://stackoverflow.com/questions/25129721/scala-memoization-how-does-this-scala-memo-work.
 *

noel-yap

#!/bin/bash

exec /opt/scala-2.10/bin/scala -feature "$0" "$@"
!#
class CartesianProduct(product: Traversable[Traversable[_ <: Any]]) {
  override def toString(): String = {
    product.toString
  }

  def *(rhs: Traversable[_ <: Any]): CartesianProduct = {

noel-yap

#!/bin/bash

exec /opt/scala-2.10/bin/scala -feature "$0" "$@"
!#
import scala.annotation.tailrec

object Primes {
  private lazy val notDivisibleBy2: Stream[Long] = 3L #:: notDivisibleBy2.map(_ + 2)
  private lazy val notDivisibleBy2Or3: Stream[Long] = notDivisibleBy2
      .grouped(3)

noel-yap

#!/bin/bash

exec /opt/scala-2.10/bin/scala -feature "$0" "$@"
!#
object Primes {
  private lazy val notDivisibleBy2: Stream[Long] = 3L #:: notDivisibleBy2.map(_ + 2)
  private lazy val notDivisibleBy2Or3: Stream[Long] = notDivisibleBy2
      .grouped(3)
      .map(_.slice(1, 3))
      .flatten