'''Basic Python for Security Professionals'''


def activity01(num1):
    '''Determine if an input number is Even or Odd'''
    if(num1 % 2 == 0):
        return "Even"
    else:
        return "Odd"


def activity02(iv_one, iv_two):
    '''Return the sum of two input values'''
    return(int(iv_one) + int(iv_two))


def activity03(num_list):
    '''Given a list of integers, count how many are even'''
    counter = 0

    for i in range(len(num_list)):
        if(num_list[i] % 2 == 0):
            counter = counter + 1

    return counter


def activity04(input_string):
    '''Return the input string, backward'''
    counter = len(input_string) - 1
    backward_string = ""

    while(counter >= 0):
        backward_string = backward_string + str(input_string[counter])
        counter = counter - 1

    return backward_string


def main():
    int1 = 3
    int2 = 23
    int3 = 81
    int4 = 18
    int5 = 32
    str1 = "Backwards"

    print activity01(int1)
    print activity02(int1, int2)
    print activity03([int1, int2, int3, int4, int5])
    print activity04(str1)

# main()