Spot the logic error

Our first function is used to find out if a number is odd or even. For instance check_end_or_odd(5) should output the word “Odd” on the screen.

def check_even_or_odd(number):
    if number % 2 == 1:
        print("Even")
    else:
        print("Odd")
        
check_even_or_odd(5)

Our second function is used to return the largest (max) of 3 numbers.

def findMax(a, b, c):
    if a > b or a > c:
        return a
    elif b > c:
        return b
    else:
        return c
        
print(findMax(7, 3, 9))

This function finds out if a given numebr is a prime number or not.

def isPrime(n):
    for i in range(2, n):
        if n % i == 0:
            return True
    return False

print(isPrime(5))

This function is used to reverse a string so for instance the string 101Computing should become gnitupmoC101.

def reverse_string(text):
    reversed_string = ""
    for char in text:
        reversed_string = reversed_string + char
    return reversed_string

print(reverse_string("101Computing"))

This function counts the number of vowels in a given string. So for instance in the string “Adele” we have 3 vowels.

def countVowels(name):
    vowels = "aeiou"
    count = 0
    for char in name:
        if char in vowels:
            count += 1
    return count

print(countVowels("Adele"))

This function claculate the iterative sum of a number e.gg Iterative Sum of 5 is 1 + 2 + 3 + 4 + 5 = 15

def iterativeSum(n):
    sum = 0
    for i in range(1,n):
        sum = sum + i
    return sum

print("iterativeSum(5) = 5 + 4 + 3 + 2 + 1 = " + str(iterativeSum(5)))

This function calculates a factorial value of any given number. For instance: %5 = 5 x 4 x 3 x 2 x 1 = 120

def factorial(n):
    if n == 0:
       return 1 #because 0! is 1
    else:
       f = 0
       for i in range(1,n+1):
          f = f * i
       return f

print("5! = 5 x 4 x 3 x 2 x 1 = " + str(factorial(5)))

This function counts the number of occurrences of a given value within a given list.

def count_occurrences(list, target):
    count = 0
    for element in list:
        if element == target:
            count = +1
    return count

print(count_occurrences([5, 2, 3, 5, 5, 4, 2], 5))

This function takes a list as a parameter and return another lists by removing all duplicate values from the initial list.

def remove_duplicates(list):
    unique_items = []
    for item in list:
        if item not in unique_items:
            unique_items.append(item)
    return list

print(remove_duplicates([1, 2, 2, 1, 3, 3, 4, 5]))

Our last function is used to display a tic tac toe (aka noughts and crosses) grid on the screen as a 3 by 3 grid.

def printGrid(grid):
   print(" |---+---+---|")
   line = ""   
   for i in range(0,3):
      for j in range(0,3):
         line = line + " | " + tictactoe[i][j]
      print(line + " |")
      print(" |---+---+---|")

tictactoe = [["X","O","X"],["O","X","O"],["X","X","O"]]
printGrid(tictactoe)