--update: added fibonacci

Author: ashokdey

src/_Classics_/fibonacci/index.js

@@ -0,0 +1,10 @@
+// the algorithm has time complexity of O(n^2), very bad!
+function fibonacci(position) {
+  // if position is 1 or 2, the number in fibonacci sequence will be 1
+  if (position < 3) {
+    return 1;
+  }
+  // else the element in fibonacci sequence will be the sum of
+  // element at position(p) (p -1) and (p - 2)
+  return fibonacci(position - 2) + fibonacci(position - 1);
+}