Activity: What else? 🤔

In addition to the earlier activities and assignments, below are a set of example problems to help you prepare for the exam. Pick FIVE problems that look the most challenging, and complete them. It will serve you best to pick the ones that you need the most practice with because any of these questions might be on the exam.

For loops

  1. Write a for loop to compute the sum of the first 50 numbers (1+2+3+….+49+50).
  2. Write a for loop to compute n! (\(1*2*3*...*n\))
  3. Write a for loop that draws a square with a turtle.
  4. Write a for loop that prints out the numbers -10, -9, -8, …., 9, 10.
  5. Write a function multiPrint which accepts two parameters: a string and a nonnegative integer representing the number of times that the string should be printed

Turtles

  1. Use a turtle to plot the function y = 10x + 18
  2. Use a turtle to draw a yellow triangle with a red background
  3. Use a turtle to draw a rectangle with width 300 and height 100
  4. Write a function drawTriangle that takes three parameters - two side lengths and the angle between them - and draws the triangle. Call/invoke the function to test it. Hint: you’ll need to remember the starting location. You can call goto(x,y) on a turtle to move the turtle from one location to another.
  5. Write a function drawLine that takes three parameters - the length of the line, the starting x coordinate, and a turtle that will draw it. The function should draw a vertical line of the specified length beginning at (x,0).

Functions

  1. Write a function called displayStudentInfo which accepts two parameters: a string representing a student’s name and a nonnegative integer representing the student’s age. The function should print a sentence about the student. For example, displayStudentInfo("Bob", 20) would print “Bob is a 20 year old student.”
  2. Write a function toCelsius(temperature) that converts Fahrenheit degrees to Celsius degrees. (Hint: C = (F-32)*(5/9)).
  3. Write a function called isEven that takes one parameter (a nonnegative integer). The function will return the boolean value True if the given number is even, otherwise, it will return the boolean value False
  4. Write a function getGrade which accepts one parameter: a nonnegative integer score between 0 and 100. The function should return the string “A”, “B”, “C”, “D”, or “F” using the standard grading scale.
  5. Write a function positivity which accepts one parameter: an integer n. The function should print either “positive number”, “zero”, or “negative number” depending on the value of n.
  6. Write a function that returns the minimum of three numbers.
  7. Write a function that uses a turtle to draw a polygon that has n sides.

If statements and booleans

  1. Write a function that returns True if x is larger than 10 and returns False otherwise.
  2. Write a function that returns True if and only if variable x is non-negative.
  3. Write a nested if statement that uses a variable snowFall and prints out:
    • “there was a hurricane today” if snowFall is over 10
    • “there was a lot of snow” if snowFall is greater than 7 but less than 10
    • “there was some snow I guess” if snowFall is greater than 3 but less than or equal to 7, and
    • “not enough snow to matter” if snowFall is less than 3
  4. Write a function fizzBuzz() that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”. For numbers which are multiples of both three and five print “FizzBuzz”. Call your function to test it. For example, the first few lines printed would appear as follows: 
    1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
16
...

Random module

  1. Create a function called isItRaining which returns False with 90% probability.
  2. Create a function called magicEightBallSays which randomly prints one of the following:
    • “It is certain.”
    • “Outlook good.”
    • “Ask again later.”
    • “Better not tell you now.”
    • “Very doubtful.”
  3. Create a variable called grade which randomly has the value A,B,C,D, or F.
  4. Create a variable called coinSide which randomly has the value 0 or 1.

How to submit

Save your work and submit it to Moodle.