#
# Python programming
#
# Unit 1 - Basic components of a Python program 
#
# Guided practice 
#

# Preliminary remarks 
# - Required knowledge 
# - Avoid using more advanced material 
# - Try yourself before watching

# Q. 1
# Write a program that recieves four digits and prints 
# them in the shape of a rhombus. E.g. 
#  4 
# 3 2 
#  1
 
digit1 = input("Please enter a digit: ")
digit2 = input("Please enter a digit: ")
digit3 = input("Please enter a digit: ")
digit4 = input("Please enter a digit: ")
print("", digit1, "")
print(digit2, digit3)
print("", digit4, "")

 

# Q. 2 
# Write a program that receives four positive integers
# and prints them rotated 1 position to the left. E.g. 
# if the program receives 7, 8, 9, 6, in this order, 
# and prints: 
# 8 9 6 7 

int1 = input("Please enter a positive integer: ")
int2 = input("Please enter a positive integer: ")
int3 = input("Please enter a positive integer: ")
int4 = input("Please enter a positive integer: ")
print(int2, int3, int4, int1)



 
# Q. 3
# Write a program that receives four floats, and then
# Prints the fourth, the second, the third and finally
# the first. Indicate the printing order 
# using proper messages. 

float1 = input("Please enter a decimal number: ")
float2 = input("Please enter a decimal number: ")
float3 = input("Please enter a decimal number: ")
float4 = input("Please enter a decimal number: ")
print("This is the forth number:", float4)
print("This is the second number:", float2)
print("This is the third number:", float3)
print("This is the first number:", float1)




# Q. 4 
# Write a program that receives three floats, 
# divides each number by 5, and prints the sum of 
# the division results, accompanied by a proper message. 

float1 = float(input("Please enter a decimal number: "))
float2 = float(input("Please enter a decimal number: "))
float3 = float(input("Please enter a decimal number: "))
print("Sum of divisions: ")
print(float1 / 5 + float2 / 5 + float3 / 5)



# Q. 5
# Write a program that receives the side of a square 
# and prints the area of the square and its perimeter. 


side = float(input("Please enter a side of a square: "))
print("The area: ", side ** 2)
print("The perimeter: ", 4 * side)




# Q. 6
# Assumming that there are exactly 365 days in a year, 
# write a program that receives a number of days 
# and calculates the number of years in all these days. 

days = int(input("Please enter number of days: "))
print(days // 365)


# Q. 7 
# Phileas Fogg committed himself to travelling the 
# entire world in 80 days. Embarking on his mission 
# some days ago, he is currently somewhere on our planet. 
# Write a program that receives the number of days 
# passed since he departed London, then calculates 
# the number of days left to the end of his journey, 
# and finally prints the result of this calculation. 

days = int(input("Please enter number of days: "))
print("Days left: ", 80 - days)



# Q. 8 
# Write a program that recieves the salary of an 
# employee (float), and also an amount of bonus, 
# in precents. The program calculates and prints
# the new salary. 

salary = float(input("Please enter salary: "))
bonus = float(input("Please enter bonus (0-100): "))
print(salary + salary * (bonus / 100))


# Q. 9 
# Roni, Nomi, and the bear Jacob, each toss a certain
# dice twice. 
# The numbers 1-6 appear on the six sides of the dice
# The dice has 6 sides.
# Write a program that simulates the game and prints 
# the sum of numbers appearing on the upper face of 
# the three dices in the first and second round of the game. 

import random 
roni1 = random.randint(1, 6)
nomi1 = random.randint(1, 6)
yaakov1 = random.randint(1, 6)
print(roni1 + nomi1 + yaakov1)
roni2 = random.randint(1, 6)
nomi2 = random.randint(1, 6)
yaakov2 = random.randint(1, 6)
print(roni2 + nomi2 + yaakov2)


# Q. 10
# Write a program that receives two digits of 
# a positive integer in range 10-99, the first 
# is the ones digit, the second is the tens digit. 
# The program prints the number. 

ones = int(input("Please enter the ones digit: "))
tens = int(input("Please enter the tens digit: "))
print(tens * 10 + ones)


# Q.11 
# Write a program that receives three digits of 
# a positive integer in range 100-999, the first 
# is the ones digit, the second is the tens digit, 
# the third is the hundreds digit. 
# The program prints the number. 

ones = int(input("Please enter the ones digit: "))
tens = int(input("Please enter the tens digit: "))
hundreds = int(input("Please enter the hundreds digit: "))
print(hundreds * 100 + tens * 10 + ones)




# Q. 12
# Write a program that receives a positive integer 
# in range 10-99 and prints the sum of its digits. 

num = int(input("Please enter a number (10-99): "))
ones = num % 10 
tens = num // 10 
print(ones + tens)



# Q. 13
# Write a program that receives a positive integer 
# in range 100-999 and prints the sum of its digits. 
# Challenge: do the same for a four-digit integer. 

num = int(input("Please enter a number (100-999): "))
ones = num % 10 
tens = (num % 100) // 10 
hundreds = num // 100 
print(ones + tens + hundreds)


# Q. 14
# Write a program that receives a number 
# representing a certain weekday (1-7), and also a 
# number of days which passed from that day till today.
# The program prints the number representing today. 

day = int(input("Please enter weekday (1-7): "))
days = int(input("Please enter number of days passed: "))
print((day + days) - ((day + days) // 7) * 7)

1 2 3 4 5 6 7 1 2 3 4  
3 + 8 = 11 

3 + 20 -> 23, 23 - 21 = 2 

print(23 - (23 // 7) * 7   )
23 = 3 * 7 + 2