l0gicpath

l0gicpath

#! /usr/bin/env ruby
require 'socket' # needed for creating tcp servers
require 'base64' # we'll use base64 for encoding images and embedding them in the response
require 'cgi' # has a lovely helper method for generating rfc1123 compliant dates for http headers

refresh_rate = 1 # in seconds, interval between each screen capture
server = TCPServer.open 3005 # start our server at port 3005

# the html page template we'll be sending over to the browser
page_tmpl = %Q[

l0gicpath

(* taking out the big guns, yes... size matters *)
open Num

open Printf

(* a throw away helper function just like pred but works with Nums, ought to give it a better name *)
let pred' n = Int (pred (int_of_num n))

(* field test *)
let rec fact x = if x =/ Int 0 then Int 1 else x */ fact (pred' x)

l0gicpath

(100..999).to_a.repeated_permutation(2).collect{|x| x[0] * x[1] if "#{x[0] * x[1]}" == "#{x[0] * x[1]}".reverse }.compact.max

l0gicpath

-module(problem_4).
-export([solve/0]).

solve() ->
  List = lists:seq(100, 999),
  [H | L] = [X * Y || X <- List, 
                      Y <- List, 
                      integer_to_list(X * Y) =:= lists:reverse(integer_to_list(X * Y))],
  solve(L, H).

l0gicpath

(f=->*a{a[2]+=a[1]%2==0?a[1]:0;a[0],a[1]=a[1],a[1]+a[0];a[0]>=a[3]||a[1]>=a[-1]?a[2]: f[*a]})[1,2,0,4000000]

l0gicpath

(l ,ss = 4000000, proc {|p, n, s| p >= l || n >= l ? s : n.even?? ss[n, n + p, s + n] : ss[n, n + p, s] })[1][1, 2, 0]

l0gicpath

-module(problem_2).
-export([s/0]).
-define(L, 4000000).

s() -> s(1, 2, 0).
s(P, N, S) when P >= ?L; N >= ?L -> S;
s(P, N, S) -> S1 = case N rem 2 of 0 -> N + S; _ -> S end, s(N, P + N, S1).

l0gicpath

-module(problem_2).
-export([solve/1]).
-define(LIMIT, 4000000).

%% Normalizing the start value, need to start with an odd value and enter tail recursion
solve(Start) when Start rem 2 == 0, Start > 0 -> solve(Start - 1, Start, 0);
solve(Start) -> solve(Start, Start + 1, 0).
%% guard against the limit and drop out of recursion if we hit it
solve(Prev, Next, Sum) when Prev >= ?LIMIT; Next >= ?LIMIT -> Sum;
%% Sum even values

l0gicpath

class ApplicationController < ActionController::Base
  protect_from_forgery

  before_filter :cors_preflight_check
  after_filter :cors_set_access_control_headers

  # For all responses in this controller, return the CORS access control headers.

  def cors_set_access_control_headers
    headers['Access-Control-Allow-Origin'] = '*'