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| 1 var html_input_d; | |
| 2 (function(exports) { | |
| 3 'use strict'; | |
| 4 // Function fib: (int) → int | |
| 5 function fib(n) { | |
| 6 return _fib(n, new core.Map()); | |
| 7 } | |
| 8 // Function _fib: (int, Map<int, int>) → int | |
| 9 function _fib(n, seen) { | |
| 10 if (dart.notNull(n === 0) || dart.notNull(n === 1)) | |
| 11 return 1; | |
| 12 if (seen.get(n) !== null) | |
| 13 return seen.get(n); | |
| 14 seen.set(n, _fib(n - 1, seen) + _fib(n - 2, seen)); | |
| 15 return seen.get(n); | |
| 16 } | |
| 17 // Exports: | |
| 18 exports.fib = fib; | |
| 19 })(html_input_d || (html_input_d = {})); | |
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