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Task/Look-and-say-sequence/LiveCode/look-and-say-sequence.livecode

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+function lookAndSay S
+   put 0 into C
+   put char 1 of S into lastChar
+   repeat with i = 2 to length(S)
+      add 1 to C
+      if char i of S is lastChar then next repeat
+      put C & lastChar after R
+      put 0 into C
+      put char i of S into lastChar
+   end repeat
+   return R & C + 1 & lastChar
+end lookAndSay
+
+on demoLookAndSay
+   put 1 into x
+   repeat 10
+      put x & cr after message
+      put lookAndSay(x) into x
+   end repeat
+   put x after message
+end demoLookAndSay