Fibonacci

lightningtgc · lightningtgc · commit 03596f640e04 · 2015-02-17T22:22:55.000+08:00
diff --git a/common.md b/common.md
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+
+### 1.Fibonacci--斐波那契数列
+
+算法复杂度为[O(2n)](http://stackoverflow.com/questions/360748/computational-complexity-of-fibonacci-sequence/360773#360773)
+
+```js
+function fibonacci(n){
+  return n < 2 ? n : fibonacci(n-1) + fibonacci(n-2); 
+}
+```
