linear_search

from random import randint

#randomly generated list of size specified by user
n_list = [randint(1, 100) for i in range(int(input("Size of random number list:")))]

#demo list for testing value recognition
#n_list = [5,3,4,1,2]

'''#linear search: FOR loop; searches sequence list and if value matches, returns position+1 for human recognition; otherwise False

def linear_search(sequence, value):
  n = len(sequence)
  for position in range(n):
    print(sequence[position], "is at position", str(position+1))
    if sequence[position] == value:
      return position+1
    elif position == (n-1) and sequence[position] != value:
      return False
'''

#linear search: ENUMERATE loop;  searches sequence list and if value matches returns exact position (already increase by 1 in enumerate); otherwise False

def linear_search(sequence, value):
  n = len(sequence)
  for position, item in enumerate(sequence,1):
    print(item, "is at position", position)
    if item == value:
      return position
    elif position == n and item != value:
      return False


#collects user guess for value to search for and feeds into linear_search function; stores result in search variable
guess = int(input("Number to search list for:"))
search = linear_search(n_list, guess)

#prints success or failure message
if search != False:
  print(str(guess), "was found at position", search)
else:
  print(str(guess), "is not in the list!")

#print list for visual inspection outside of function
#print(n_list)