tnoda

require 'rake'
require 'rspec/core/rake_task'

RSpec::Core::RakeTask.new(:spec) 

task :default  => :spec

tnoda

;; ess-R-object-popup.el
;; 
;; I have defined a function, ess-R-object-popup, that when
;; invoked, will return a popup with some information about
;; the object at point.  The information returned is
;; determined by which R function is called.  This is controlled
;; by an alist, called ess-R-object-popup-alist.  The default is
;; given below.  The keys are the classes of R object that will
;; use the associated function.  For example, when the function
;; is called while point is on a factor object, a table of that

tnoda

(def ^:dynamic *m-fib*)

(defn fib
  [n]
  (let [fib* (memoize (fn
                        [x]
                        (if (< 1 x)
                          (+ (*m-fib* (dec x))
                             (*m-fib* (- x 2)))
                          1)))]

tnoda

;;;A palindromic number reads the same both ways.
;;;The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99.
;;;Find the largest palindrome made from the product of two 3-digit numbers.

;;;左右どちらから読んでも同じ値になる数を回文数という。 2桁の数の積で表される回文数のうち、
;;;最大のものは 9009 = 91 × 99 である。
;;;では、3桁の数の積で表される回文数のうち最大のものはいくらになるか。

(ns projecteuler.problem-4
  (:require [clojure.string :as str])

tnoda

Problem 1

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

---

Retrieved from http://projecteuler.net/problem=1, on Nov 14 2012.

tnoda

user> (bench insert-vector [] 1000)
"Elapsed time: 117.616 msecs"
[835 483 229 138 454 643 450 636 792 357 35 455 986 249 181 25 966 519 590 71 ...]
user> (bench insert-vector' [] 1000)
"Elapsed time: 61.382 msecs"
[545 468 921 491 728 783 577 15 620 231 787 537 8 435 730 842 334 55 527 534 ...]

tnoda

;;; http://melborne.github.com/2012/07/12/object-repeat-take-care-of-sequence/
;;; を Clojure でやってみた。
;;; 9.、10. は挫折www

;;; 1. 初項1、公差2の等差数列の最初の20項を求めなさい。
(take 20 (iterate #(+ % 2) 1))
;;; => (1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39)

;;; 2. 初項3、公比2の等比数列の最初の20項を求めなさい。
(take 20 (iterate #(* % 2) 3))

tnoda

;;; cljdoc.el --- eldoc mode for clojure

;; Copyright (C) 2011 tomykaira

;; Version 0.1.0
;; Keywords: eldoc clojure
;; Author: tomykaira <[email protected]>
;; URL: https://gist.github.com/1386472

;; This file is not part of GNU Emacs.