oscardelben

class QuickSort {

  private int[] numbers;

  public static void main(String[] args) {
    int[] numbers = {2, 8, 7, 1, 3, 5, 6, 4};

    QuickSort q = new QuickSort();
    q.sort(numbers);
    for (int i : numbers) {

oscardelben

public class MergeSort {

  public static void main(String[] args) {
    int[] numbers = {4, 6, 2, 25234, 34, 5};
    MergeSort m = new MergeSort(numbers);
    m.sort();
    for (int i = 0; i < numbers.length; i++) {
      System.out.print(numbers[i] + " ");
    }
  }

oscardelben

ruby-1.9.3-p392 cumulative performance patch for rbenv

(I guarantee nothing. No warranty I am not responsible blah blah blah. Seems to work great for me so far. Thanks to Tyler Bird who I forked this from.)

This installs a patched ruby 1.9.3-p392 with the railsexpress patchsets: https://github.com/skaes/rvm-patchsets

Requirements

• rbenv
• ruby-build

oscardelben

package main

import (
  "fmt"
)

/*
Problem formulation

initial state: 3 missionaries and 3 cannibals on one side

oscardelben

package main

import (
	"fmt"
	"log"
	"net"
	"net/http"
	"net/rpc"
)

oscardelben

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>

// Goal: What should this print?

#define FILE_NAME "foo"

void checkFD(int fd);

oscardelben

package main                                                                                                                     

import (
  "fmt"
  "runtime"
)

func main() {
  runtime.GOMAXPROCS(runtime.NumCPU())

oscardelben

require 'digest/md5'                                                                                           

module Rack
  # Adds the Content-MD5 entity header which provides a MD5 digest of
  # the entity body for integrity check.
  class MD5

    def initialize app
      @app = app
    end

oscardelben

require 'rake/testtask'
require 'rake/clean'

# rule to build the extension: this says
# that the extension should be rebuilt
# after any change to the files in ext
file "lib/http-parser/ruby_http_parser.so" =>
Dir.glob("ext/ruby_http_parser/*{.rb,.c}") do
  Dir.chdir("ext/ruby_http_parser") do
    # this does essentially the same thing

oscardelben

require 'benchmark'                                                                                             

puts "*** without send ***"
puts RubyVM::InstructionSequence.compile('"foo" * 3').disasm
puts

puts( Benchmark.measure do
  10_000_000.times do
    "foo"
  end