fixed binary and fibonacci

assignment-11.py

@@ -1,10 +1,6 @@
-# BINARY AND FIBONACCI SEARCH DON'T EXACTLY WORK.
-# HELP US IF YOU CAN BY CREATING AN ISSUE.
-
 # List to store roll numbers of students that attended the program
 programRoll=[]
 attendees=int(input("Enter the number of students attending the program:\t"))
-begin=0
 
 # Function to take input for roll numbers in list
 def attendInput():
@@ -32,6 +28,25 @@ def sentinelSearch(roll_list, roll_search, n):
     else:
         return -1
 
+def binarySearch(arr, target):
+    arr.sort()
+    # Binary search on the sorted list
+    low, high = 0, len(arr) - 1
+    while low <= high:
+        mid = (low + high) // 2
+        mid_element = arr[mid]
+
+        if mid_element == target:
+            return mid  # Target element found, return its index
+        elif mid_element < target:
+            low = mid + 1  # Target is in the right half
+        else:
+            high = mid - 1  # Target is in the left half
+
+    return -1  # Target element not found in the list
+
+'''
+# DOESN'T WORK THIS ONE
 # Binary search
 def binarySearch(roll_list, roll_search, begin, n):
     if begin>n:
@@ -43,9 +58,11 @@ def binarySearch(roll_list, roll_search, begin, n):
         return binarySearch(roll_list, roll_search, begin, mid-1)
     else:
         return binarySearch(roll_list,roll_search,mid+1,n)
+'''
 
 # Fibonacci search
 def fibonacciSearch(students_attend, search_element, n):
+    students_attend.sort()
     fibMMm2 = 0
     fibMMm1 = 1
     fibM = fibMMm2 + fibMMm1
@@ -101,19 +118,19 @@ def main():
 			else:
 			    print(f"\nRoll number {searchAttendee} has either not been added to the list or was absent.\n")
 		elif (optn==3):
-			result=binarySearch(programRoll, searchAttendee, begin, attendees)
+			result=binarySearch(programRoll, searchAttendee)
 			if (result==-1):
-			    print(f"\nRoll number {searchAttendee} attended the program.\n")
-			else:
 			    print(f"\nRoll number {searchAttendee} has either not been added to the list or was absent.\n")
+			else:
+			    print(f"\nRoll number {searchAttendee} attended the program.\n")
 		elif (optn==4):
 			result=fibonacciSearch(programRoll, searchAttendee, attendees)
 			if (result==-1):
-			    print(f"\nRoll number {searchAttendee} attended the program.\n")
-			else:
 			    print(f"\nRoll number {searchAttendee} has either not been added to the list or was absent.\n")
+			else:
+			    print(f"\nRoll number {searchAttendee} attended the program.\n")
 		elif (optn==5):
-			print("## DESIGNED AND ENGINEERED BY KSHITIJ\n## END OF CODE")
+			print("\n## END OF CODE\n\n")
 			quit()
 		else:
 			print("\nPlease choose a valid option (1-5)\n")