adding code to calculate fibnonci for /poll url 🍰

polls/views.py

@@ -1,8 +1,24 @@
+from math import sqrt
 from django.shortcuts import render
 
 # Create your views here.
 from django.http import HttpResponse
 
 
+
 def index(request):
-    return HttpResponse("Hello, world. You're at the polls index.")
+    n = int(request.GET.get('n', 15))
+    return HttpResponse("Fibnonci of " + str(n) + " using <br> Normal Approach:" + str(fibnonci_normal(n)) + "  <br> Easy Formula Approach" + str(fibnonci_easy(n)))
+
+
+def fibnonci_normal(n):
+    if n == 0:
+        return 0
+    elif n == 1:
+        return 1
+    else:
+        return fibnonci_normal(n - 1) + fibnonci_normal(n - 2)
+
+
+def fibnonci_easy(n):
+    return ((1 + sqrt(5))**n - (1 - sqrt(5))**n) / (2**n * sqrt(5))