A-M baby

2013-04-10 21:29:02 -07:00 · 2013-04-10 21:29:02 -07:00 · db842d013d
commit db842d013d
parent 764da6cbbb
19005 changed files with 197040 additions and 7 deletions
--- a/Task/Fibonacci-sequence/JavaScript/fibonacci-sequence-3.js
+++ b/Task/Fibonacci-sequence/JavaScript/fibonacci-sequence-3.js
@ -0,0 +1,7 @@
+var fib = (function(cache){
+    return cache = cache || {}, function(n){
+        if (cache[n]) return cache[n];
+        else return cache[n] = n == 0 ? 0 : n < 0 ? -fib(-n)
+            : n <= 2 ? 1 : fib(n-2) + fib(n-1);
+    };
+})();