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authorKartik K. Agaram <vc@akkartik.com>2015-07-28 15:50:04 -0700
committerKartik K. Agaram <vc@akkartik.com>2015-07-28 15:50:04 -0700
commit86d99645dcd8ab83a68f10c30d8321d353ae93ac (patch)
tree2c7cf4048dd2cb54146c778e24c2f5eeb1849280 /013literal_string.cc
parent112613fe90b36b4678c7b09e379ef3f76f012c08 (diff)
downloadmu-86d99645dcd8ab83a68f10c30d8321d353ae93ac.tar.gz
1875
Diffstat (limited to '013literal_string.cc')
0 files changed, 0 insertions, 0 deletions
 

generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-06-28 06:33:04 +0000


 


r: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
# http://rosettacode.org/wiki/N-queens_problem
# port of the Arc solution at http://arclanguage.org/item?id=19743

container square [
  rank:number
  file:number
]

def nqueens n:number, queens:address:list:square -> result:number [
  local-scope
  load-ingredients
  # if 'queens' is already long enough, print it and return
  added-so-far:number <- length queens
  {
    done?:boolean <- greater-or-equal added-so-far, n
    break-unless done?
    stash queens
    return 1
  }
  # still work to do
  next-rank:number <- copy 0
  {
    break-unless queens
    first:square <- first queens
    existing-rank:number <- get first, rank:offset
    next-rank <- add existing-rank, 1
  }
  result <- copy 0
  next-file:number <- copy 0
  {
    done?:boolean <- greater-or-equal next-file, n
    break-if done?
    curr:square <- merge next-rank, next-file
    {
      curr-conflicts?:boolean <- conflict? curr, queens
      break-if curr-conflicts?
      new-queens:address:list:square <- push curr, queens
      sub-result:number <- nqueens n, new-queens
      result <- add result, sub-result
    }
    next-file <- add next-file, 1
    loop
  }
]

def conflict? curr:square, queens:address:list:square -> result:boolean [
  local-scope
  load-ingredients
  result1:boolean <- conflicting-file? curr, queens
  reply-if result1, result1
  result2:boolean <- conflicting-diagonal? curr, queens
  reply result2
]

def conflicting-file? curr:square, queens:address:list:square -> result:boolean [
  local-scope
  load-ingredients
  curr-file:number <- get curr, file:offset
  {
    break-unless queens
    q:square <- first queens
    qfile:number <- get q, file:offset
    file-match?:boolean <- equal curr-file, qfile
    reply-if file-match?, 1/conflict-found
    queens <- rest queens
    loop
  }
  reply 0/no-conflict-found
]

def conflicting-diagonal? curr:square, queens:address:list:square -> result:boolean [
  local-scope
  load-ingredients
  curr-rank:number <- get curr, rank:offset
  curr-file:number <- get curr, file:offset
  {
    break-unless queens
    q:square <- first queens
    qrank:number <- get q, rank:offset
    qfile:number <- get q, file:offset
    rank-delta:number <- subtract qrank, curr-rank
    file-delta:number <- subtract qfile, curr-file
    rank-delta <- abs rank-delta
    file-delta <- abs file-delta
    diagonal-match?:boolean <- equal rank-delta, file-delta
    reply-if diagonal-match?, 1/conflict-found
    queens <- rest queens
    loop
  }
  reply 0/no-conflict-found
]



 

generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-06-28 06:33:04 +0000