From d7712de936f0e233697c06a9285381aec38b1631 Mon Sep 17 00:00:00 2001
From: Laisha Wadhwa <laisha.w16@iiits.in>
Date: Fri, 11 Oct 2019 10:40:21 +0530
Subject: [PATCH 1/3] added fibonacci_search.py

---
 searches/fibonacci_search.py | 37 ++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 searches/fibonacci_search.py

diff --git a/searches/fibonacci_search.py b/searches/fibonacci_search.py
new file mode 100644
index 000000000000..c3ee3d96ea7a
--- /dev/null
+++ b/searches/fibonacci_search.py
@@ -0,0 +1,37 @@
+'''
+@params
+arr: input array
+val: the value to be searched
+output: the index of element in the array or -1 if not found
+return 0 if input array is empty
+'''
+def fibonacci_search(arr, val):
+    fib_N_2 = 0
+    fib_N_1 = 1
+    fibNext = fib_N_1 + fib_N_2
+    length = len(arr)
+    if length == 0:
+    	return 0
+    while (fibNext < len(arr)):
+        fib_N_2 = fib_N_1
+        fib_N_1 = fibNext
+        fibNext = fib_N_1 + fib_N_2
+    index = -1;
+    while (fibNext > 1):
+        i = min(index + fib_N_2, (length-1))
+        if (arr[i] < val):
+            fibNext = fib_N_1
+            fib_N_1 = fib_N_2
+            fib_N_2 = fibNext - fib_N_1
+            index = i
+        elif (arr[i] > val):
+            fibNext = fib_N_2
+            fib_N_1 = fib_N_1 - fib_N_2
+            fib_N_2 = fibNext - fib_N_1
+        else :
+            return i
+    if (fib_N_1 and index < length-1) and (arr[index+1] == val):
+        return index+1;
+    return -1
+#Testing the code
+print(FibonacciSearch([1,6,7,0,0,0], 6))

From 7192b9827f48c3a624060034ca52a4c64462821f Mon Sep 17 00:00:00 2001
From: Laisha Wadhwa <laisha.w16@iiits.in>
Date: Fri, 11 Oct 2019 10:47:40 +0530
Subject: [PATCH 2/3] added Fibonacci_search.py after error handling

---
 searches/fibonacci_search.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/searches/fibonacci_search.py b/searches/fibonacci_search.py
index c3ee3d96ea7a..a3b6d6df4d22 100644
--- a/searches/fibonacci_search.py
+++ b/searches/fibonacci_search.py
@@ -34,4 +34,4 @@ def fibonacci_search(arr, val):
         return index+1;
     return -1
 #Testing the code
-print(FibonacciSearch([1,6,7,0,0,0], 6))
+print(fibonacci_search([1,6,7,0,0,0], 6))

From b3a6d315bf0e86cd120c4bb2007c3ec2096f40fb Mon Sep 17 00:00:00 2001
From: Laisha Wadhwa <laisha.w16@iiits.in>
Date: Fri, 11 Oct 2019 22:00:21 +0530
Subject: [PATCH 3/3] added doctests

---
 searches/fibonacci_search.py | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/searches/fibonacci_search.py b/searches/fibonacci_search.py
index a3b6d6df4d22..f76528b9c283 100644
--- a/searches/fibonacci_search.py
+++ b/searches/fibonacci_search.py
@@ -1,3 +1,5 @@
+#run using python fibonacci_search.py -v
+
 '''
 @params
 arr: input array
@@ -6,6 +8,15 @@
 return 0 if input array is empty
 '''
 def fibonacci_search(arr, val):
+
+    """
+    >>> fibonacci_search([1,6,7,0,0,0], 6)
+    1
+    >>> fibonacci_search([1,-1, 5, 2, 9], 10)
+    -1
+    >>> fibonacci_search([], 9)
+    0
+    """
     fib_N_2 = 0
     fib_N_1 = 1
     fibNext = fib_N_1 + fib_N_2
@@ -33,5 +44,7 @@ def fibonacci_search(arr, val):
     if (fib_N_1 and index < length-1) and (arr[index+1] == val):
         return index+1;
     return -1
-#Testing the code
-print(fibonacci_search([1,6,7,0,0,0], 6))
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()