Knuth shuffle: Difference between revisions

Content added Content deleted

Inline

@@ Line 2,177: / Line 2,177: @@
 void local fn KnuthShuffle( mutArr as CFMutableArrayRef )
-NSUInteger i, j, count
+  NSUInteger i, j, count
-count = len(mutArr)
+  count = len(mutArr)
-for i = 0 to count -1
+  for i = 0 to count -1
+    cln j = arc4random_uniform(i);
-j = rnd( i + 1 )
+    MutableArrayExchangeObjects( mutArr, i, j )
-if j > count - 1 then j = count - 1
+  next
-MutableArrayExchangeObjects( mutArr, i, j )
-next
 end fn
@@ Line 2,194: / Line 2,193: @@
 NSLog( @"Before shuffle: %@", fn ArrayComponentsJoinedByString( mutArr, @"" ) )
-for i = 1 to 10
+for i = 1 to 100
-fn KnuthShuffle( mutArr )
+  fn KnuthShuffle( mutArr )
-NSLog( @"%@", fn ArrayComponentsJoinedByString( mutArr, @"" ) )
+  NSLog( @"%@", fn ArrayComponentsJoinedByString( mutArr, @"" ) )
 next