How many steps would it take to move the chicken into box b and the elephant into box a, knowing that you cannot have more than one animal per box?

#### Using variables

In a computer program,

**variables**are used to hold values that the program will be abe to access and change if necessary. Variables can contain different

**types**of values such as strings (e.g. “Hello World”), numbers (integers or reals) or Boolean (True or False) values.

Each variable is given a meaningful **identifier**, chosen by the programmer such as *message*, *playerName*, *score*, *numberOfLives*.

The **assignment operator =** is used to assign/store a value to a variable.

e.g.

message = "Hello world!" playerName = input("Enter your name") score = 0 numberOfLives = 3

#### The Swapping Puzzle

Let’s replace the cardboard boxes from the above box swap puzzle with three

**variables**called

*a*,

*b*and

*temp*. We can

**initialise**our variables

*a*and

*b*with their initial values as follows:

a = "chicken" b = "elephant"

We can solve the above puzzle to swap the content of our two variables using the same three-step approach as follows:

a = "chicken" b = "elephant" temp = a a = b b = temp print("Variable a = " + a) print("Variable b = " + b)

#### Your Challenge

Write a program that asks the user to enter two values between 1 and 10 and assign these values to two variables called number1 and number2.

Add some code to ensure that number1 ends up with the highest of the two values and number2 with the lowest of the two values. In other words, if number1 is smaller than number2, swap the content of the variables number1 and number2.

Output number1 and number2 on screen.

To complete this challenge, you will have to complete the Python code below:

#### Extension Task

Extend your code to retrieve

**three user inputs**and swap these to display them in ascending order.

[pms-restrict display_to=”not_logged_in” message=” “]

#### Solution...

The solution for this challenge is available to full members!Find out how to become a member:

➤ Members' Area

#### Solution...

You are viewing this solution as part of your full membership subscription!Variables SwapSorting three values

#### Python Code

#Swapping the content of two variables #Retrieve user inputs number1 = int(input("Enter a number between 1 and 10:")) number2 = int(input("Enter a number between 1 and 10:")) #Perform a permutation only if number1 is lower than number 2 if number1<number2: temp = number1 number1 = number2 number2 = temp #Output the 2 numbers print("In descending order...") print(number1) print(number2)

#### Python Code

#Ordering 3 numbers in ascending order #Retrieve user inputs number1 = int(input("Enter a number between 1 and 10:")) number2 = int(input("Enter a number between 1 and 10:")) number3 = int(input("Enter a number between 1 and 10:")) #Perform permutations to order all three numbers if number1>number2: temp = number1 number1 = number2 number2 = temp if number2>number3: temp = number2 number2 = number3 number3 = temp if number1>number2: temp = number1 number1 = number2 number2 = temp #Output 3 numbers in ascending order print("In ascending order...") print(number1) print(number2) print(number3)