Solutions.md

Conditional Execution

Q1

num1 = int(input("Plese enter first number: "))
num2 = int(input("Plese enter second number: "))

if num1 % num2 == 0 or num2 % num1 == 0:
    print("Multiple")
else:
    print("Not multiple")

Q2 - Simple Sort

Q2a

num1 = int(input("Please enter first number: "))
num2 = int(input("Please enter second number: "))

if num1 > num2:
    tmp = num1
    num1 = num2
    num2 = tmp
    
# Alternatively
# if num1 > num2:
#   num1, num2 = num2, num1

print(num1, num2)

Alternative solution:

num1 = int(input("Please enter first number: "))
num2 = int(input("Please enter second number: "))

if (num1 > num2):
  print(num2, num1)
else:
  print(num1, num2)

Q2b

num1 = int(input("Please enter first number: "))
num2 = int(input("Please enter second number: "))
num3 = int(input("Please enter third number: "))

#1 and 2
if (num1 > num2):
    tmp = num1
    num1 = num2
    num2 = tmp

#1 and 3
if (num1 > num3):
    tmp = num1
    num1 = num3
    num3 = tmp

#2 and 3
if (num2 > num3):
    tmp = num2
    num2 = num3
    num3 = tmp

print(num1, num2, num3)

# Another solution
if a >= b and a >= c:
    maximum = a
elif b >= a and b >= c:
    maximum = b
else:
    maximum = c

if a <= b and a <= c:
    minimum = a
elif b <= a and b <= c:
    minimum = b
else:
    minimum = c
    
# Another solution (with Ternary if)

max_a_b = a if a > b else b
maximum = max_a_b if max_a_b > c else c

min_a_b = a if a < b else b
minimum = min_a_b if min_a_b < c else c

middle = a + b + c - minimum - maximum

print(minimum, middle, maximum)

""" We can find middle in another way
if a != minimum and a != maximum:
    middle = a
if b != minimum and b != maximum:
    middle = b
if c != minimum and c != maximum:
    middle = c
"""

Question 3

def is_leap_year(x):
   if x % 4 == 0 and x % 100 != 0:
       print("leap year")
   elif x % 400 == 0:
       print("leap year")
   else:
       print("not a leap year")

year= int(input())
is_leap_year(year)

Alternative solution:

def is_leap_year(x):
  if x % 400 == 0:
      return True
  elif x % 100 == 0:
      return False
  elif x % 4 == 0:
      return True
  else:
      return False

year = int(input())
output = is_leap_year(year)

if output:
  print("leap year")
else:
  print("not a leap year")

Question 4

import math

hour = int(input())
minute = int(input())

total_minutes = hour * 60 + minute

if total_minutes <= 15:
 print(15)
else:
 print(15 + 10 * math.ceil(total_minutes / 60))

Question 5

a, b = input().strip().split()
a = int(a)
b = int(b)

def greatest_common_divisor(a, b):
  if a < b:
      least = a
  else:
      least = b

  gcd = 0
  for i in range(1, least + 1):
      if a % i == 0 and b % i == 0:
          gcd = i
  print(gcd)

greatest_common_divisor(a, b)

Alternative solution:

a, b = input().strip().split()
a = int(a)
b = int(b)

def greatest_common_divisor(a, b):
  if a < b:
      least = a
  else:
      least = b

  for i in range(least, 0, -1):
      if a % i == 0 and b % i == 0:
          gcd = i
          return gcd

print(greatest_common_divisor(a, b))

Question 6

A, B = input().strip().split()
A = int(A)
B = int(B)


def is_prime(n):
   if n <= 1:
       return False

   for num in range(2, n//2+1):
       if n % num == 0:
           return False
   return True


for i in range(A, B+1):
   if is_prime(i):
       print(i, end=" ")

Question 7

  n = int(input())
  
  A_students = 0
  B_students = 0
  C_students = 0
  failed_students = 0
  
  for i in range(n):
      attendance, overall_score = input().strip().split()
      attendance = int(attendance)
      overall_score = int(overall_score)
  
      if attendance >= 75:
          if overall_score >= 80:
              A_students += 1
          elif overall_score >= 65:
              B_students += 1
          elif overall_score >= 50:
              C_students += 1
          else:
              failed_students += 1
      else:
          failed_students += 1
  
  print("Passed with A:", A_students)
  print("Passed with B:", B_students)
  print("Passed with C:", C_students)
  print("Failed the course:", failed_students)
  

Question 8

x = input()
if x % 15 == 0:
 print("FizzBuzz")
elif x % 3 == 0:
 print("Fizz")
elif x % 5 == 0:
 print("Buzz")
else:
 print(x)

Question 9

N = int(input())

for i in range(1,N+1):
    if i % 2 == 0:
        print(i)
    else:
        for j in range(i):
            print(i,end='')
        print() 

Question 10

A = int(input())
B = int(input())

flag = False
for i in range(0, A):
    if A == B ** i:
        flag = True
        break
if flag:
    print("Yes")
else:
    print("No")

Alternative solution:

A = int(input())
B = int(input())

for i in range(0, A):
  if B ** i == A:
      print("Yes")
      break
  elif B ** i > A:
      print("No")
      break

Question 11

def is_perfect(num):
  sum_of_divisors = 0
  for i in range(1, num):
      if num % i == 0:
          sum_of_divisors += i
  return sum_of_divisors == num

def all_the_perfects(N, M):
  for i in range(N, M + 1):
      if is_perfect(i):
          print(i, end=" ")

all_the_perfects(1, 10000)