freq.coffee

   1 #!/usr/bin/coffee
   2
   3 # this script tries to calculate an optimal letter distrobution.
   4
   5 fs = require 'fs'
   6
   7
   8 fs.readFile 'wordlist.txt', 'utf8', (err, data) ->
   9         if err?
  10                 console.log "Error reading #{orig_file}: #{err}"
  11                 process.exit(1)
  12         else
  13                 weights = {
  14                         a: 0
  15                         b: 0
  16                         c: 0
  17                         d: 0
  18                         e: 0
  19                         f: 0
  20                         g: 0
  21                         h: 0
  22                         i: 0
  23                         j: 0
  24                         k: 0
  25                         l: 0
  26                         m: 0
  27                         n: 0
  28                         o: 0
  29                         p: 0
  30                         q: 0
  31                         r: 0
  32                         s: 0
  33                         t: 0
  34                         u: 0
  35                         v: 0
  36                         w: 0
  37                         x: 0
  38                         y: 0
  39                         z: 0
  40                         qu: 0
  41                 }
  42                 words = data.split '\n'
  43                 for word in words
  44                         weight = 1.0 * Math.pow .6, (Math.abs(word.length - 4))
  45                         i = 0
  46                         while i < word.length
  47                                 if word[i] is 'q' and i < word.length and word[i+1] is 'u'
  48                                         weights['qu'] += weight
  49                                         i += 2
  50                                 else
  51                                         #if word[i] is 'u' and i > 0 and word[i-1] is 'q'
  52                                         #       console.log "skipping the u of a qu didn't work"
  53                                         weights[word[i]] += weight
  54                                         i += 1
  55
  56                 total = 0
  57                 for letter, weight of weights
  58                         total += Math.round(weight)
  59
  60                 for letter, weight of weights
  61                         weight = Math.round(weight)
  62                         #console.log "#{letter}: #{Math.round(weight / total * 1000)} (1 in #{Math.round(total / weight)})"
  63                         console.log "#{weight} # #{letter}"
  64
  65                 console.log "total: #{total}"