From f344b250f6f062a1a1902bf69b23ebf9b565de0e Mon Sep 17 00:00:00 2001 From: "Kartik K. Agaram" Date: Sat, 17 Sep 2016 15:01:51 -0700 Subject: 3395 --- html/nqueens.mu.html | 47 +++++++++++++++++++++++++++-------------------- 1 file changed, 27 insertions(+), 20 deletions(-) (limited to 'html/nqueens.mu.html') diff --git a/html/nqueens.mu.html b/html/nqueens.mu.html index fcc9c791..b05a8618 100644 --- a/html/nqueens.mu.html +++ b/html/nqueens.mu.html @@ -33,17 +33,19 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color 
 # http://rosettacode.org/wiki/N-queens_problem
 # port of the Arc solution at http://arclanguage.org/item?id=19743
+# run with tracing turned on:
+#   ./mu --trace nqueens.mu
 
 container square [
-  rank:number
-  file:number
+  rank:num
+  file:num
 ]
 
-def nqueens n:number, queens:address:list:square -> result:number [
+def nqueens n:num, queens:&:list:square -> result:num [
   local-scope
   load-ingredients
   # if 'queens' is already long enough, print it and return
-  added-so-far:number <- length queens
+  added-so-far:num <- length queens
   {
     done?:boolean <- greater-or-equal added-so-far, n
     break-unless done?
@@ -51,15 +53,15 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
     return 1
   }
   # still work to do
-  next-rank:number <- copy 0
+  next-rank:num <- copy 0
   {
     break-unless queens
     first:square <- first queens
-    existing-rank:number <- get first, rank:offset
+    existing-rank:num <- get first, rank:offset
     next-rank <- add existing-rank, 1
   }
   result <- copy 0
-  next-file:number <- copy 0
+  next-file:num <- copy 0
   {
     done?:boolean <- greater-or-equal next-file, n
     break-if done?
@@ -67,8 +69,8 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
     {
       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
+      new-queens:&:list:square <- push curr, queens
+      sub-result:num <- nqueens n, new-queens
       result <- add result, sub-result
     }
     next-file <- add next-file, 1
@@ -76,7 +78,7 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
   }
 ]
 
-def conflict? curr:square, queens:address:list:square -> result:boolean [
+def conflict? curr:square, queens:&:list:square -> result:boolean [
   local-scope
   load-ingredients
   result1:boolean <- conflicting-file? curr, queens
@@ -85,14 +87,14 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
   reply result2
 ]
 
-def conflicting-file? curr:square, queens:address:list:square -> result:boolean [
+def conflicting-file? curr:square, queens:&:list:square -> result:boolean [
   local-scope
   load-ingredients
-  curr-file:number <- get curr, file:offset
+  curr-file:num <- get curr, file:offset
   {
     break-unless queens
     q:square <- first queens
-    qfile:number <- get q, file:offset
+    qfile:num <- get q, file:offset
     file-match?:boolean <- equal curr-file, qfile
     reply-if file-match?, 1/conflict-found
     queens <- rest queens
@@ -101,18 +103,18 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
   reply 0/no-conflict-found
 ]
 
-def conflicting-diagonal? curr:square, queens:address:list:square -> result:boolean [
+def conflicting-diagonal? curr:square, queens:&:list:square -> result:boolean [
   local-scope
   load-ingredients
-  curr-rank:number <- get curr, rank:offset
-  curr-file:number <- get curr, file:offset
+  curr-rank:num <- get curr, rank:offset
+  curr-file:num <- 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
+    qrank:num <- get q, rank:offset
+    qfile:num <- get q, file:offset
+    rank-delta:num <- subtract qrank, curr-rank
+    file-delta:num <- subtract qfile, curr-file
     rank-delta <- abs rank-delta
     file-delta <- abs file-delta
     diagonal-match?:boolean <- equal rank-delta, file-delta
@@ -122,6 +124,11 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
   }
   reply 0/no-conflict-found
 ]
+
+def main [
+  nqueens 4
+  $dump-trace [app]
+]
-- cgit 1.4.1-2-gfad0