Store your street address, city, state, and zip code in variables (or
even better, a hash!), then print them in the usual format:
City, State, Zip
Write a program that converts seconds to years. Test your program with
600000000 seconds, 60 seconds, and 40000.33 seconds.
Does this make sense for all the inputs? We can get a bit more exact if
we cast test1 as a float.
test1 = 600000000.to_f
Create a collection of these authors and the year they kicked the bucket; print the
collection in the following format:
Charles Dickens died in 1870.
Charles Dickens, 1870
William Thackeray, 1863
Anthony Trollope, 1882
Gerard Manley Hopkins, 1889
A time traveller has suddenly appeared in your classroom!
Create a variable representing the traveller’s year of origin (e.g., year = 2000) and greet our strange visitor with a different message if he is from the distant past (before 1900), the present era (1900-2020) or from the far future (beyond 2020).
Pirate Test (easy)
Write a program that tests whether someone is a pirate or not. As we all know, no pirate can resist using the exclamation “Arrr!” constantly. If a string contains “Arrr!”, tell the pirate to go away. Otherwise, welcome your non-pirate friend with open arms.
Arrr! How are ye?
Hint: string_variable["some text"] equals “some text” if those characters exist in
string_variable and otherwise equals nil.
Longest word (not too hard)
Print out the longest word in “The quick brown fox jumped over the lazy dogs” and its length.
my_string.length equals the length of a string.
my_long_string.split(" ").each will break the string up by spaces.
What about “The quick brown fox jumps over the lazy dogs”? How might we find all the longest words?
Calculating Grades (ok, let me think about this one)
Write a program that will average 3 numeric exam grades, return an average test score, a corresponding letter grade, and a message stating whether the student is passing.
Exams: 89, 90, 90
Student is passing.
Exams: 50, 51, 0
Student if fails.
Population Growth (Might need to ask somebody)
The population of Fibonaccia has been shown to grow at an exponential rate with a really odd phenomenon: each year the total population is the sum of the population for the previous two years. With a starting population of 10, the population for the first five years would be:
10, 20, 30, 50, 80
Write a program that will calculate the population of Fibonaccia after 10 years, 20 years, 100 years.
Hint: population = [0,10]
Population Growth (Are you serious?)
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, …
Find the sum of all the even-valued terms in the sequence which do not exceed 4 million.