urokuta

#include <math.h>
double AttackerSuccessProbability(double q, int z){
  double p = 1.0 - q;
  double lambda = z * (q / p);
  double sum = 1.0;
  int i, k;
  for (k = 0; k <= z; k++){
    double poisson = exp(-lambda);
    for (i = 1; i <= k; i++)poisson *= lambda / i;
    sum -= poisson * (1 - pow(q / p, z - k));

urokuta

<?php

class AdAbTest {
  private $templates = array();
  public function addTemplate($template, $ratio) {
    $this->templates[] = array(
      "template" => $template,
      "ratio" => $ratio,
    );
  }

urokuta

def expr(e) e.to_s.include?("=") ? e.split[0..-2].inject([]){|arr,e| (!arr.empty? && arr.last =~ /[^\d]/) ? [eval([*arr,e].join)] : arr << e } : ->(_e){expr("#{e} #{_e}")} end
puts expr(4)["+"][3]["*"][2]["-"][1]["="]

urokuta

def expr(e, stack=[], rpn=[])
  case e
  when "="
    rpn += stack.reverse
    return rpn.inject([]) do |arr, token|
        case token.to_s
        when /[-+*\/]/ then arr << arr.pop(2).inject($&)
        when /\d+/ then arr << $&.to_f
        end
    end.shift

urokuta

num = ARGV[0]
1.upto(num.to_i) {|i|
    if i % 3 == 0 && i % 5 == 0 then
        puts "fizzbuzz"
    elsif i%3 == 0 then
        puts "fizz"
    elsif i%5 == 0 then
        puts "buzz"
    else
        puts i