Loops — Learn bubblecode

Loops let you run the same code multiple times. In bubblecode, loops start with repeat and end with end repeat.

Counting loops

The most common loop counts from one number to another:

count.bubble

repeat with i from 1 to 5
say "Step" && i
end repeat

Counting down

Add down to count in reverse:

countdown.bubble

repeat with i from 5 down to 1
say i & "..."
end repeat
say "Go!"

Repeat a fixed number of times

If you don’t need a counter, just specify how many times:

fixed.bubble

repeat 3 times
say "Hip hip hooray!"
end repeat

repeat until

Keep looping until a condition becomes true:

until.bubble

put 1 into n
 
repeat until n is greater than 10
say n
put n * 2 into n
end repeat
 
say "Final:" && n

Loops + conditions

Combine loops with if to do interesting things:

fizz.bubble

repeat with i from 1 to 15
if i mod 3 is 0 and i mod 5 is 0 then
  say i && "- FizzBuzz"
else if i mod 3 is 0 then
  say i && "- Fizz"
else if i mod 5 is 0 then
  say i && "- Buzz"
else
  say i
end if
end repeat

Exercise

Print the numbers 1 through 5, each on its own line.

exercise.bubble

-- Print 1 to 5
repeat with i from 1 to 5
say ""
end repeat

Quiz

Question 1 of 3

What keyword ends a loop in bubblecode?