freecodecamp--freecodecamp/curriculum/challenges/english/blocks/daily-coding-challenges-python/69c5f3d787b1725d5f00c8bd.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
69c5f3d787b1725d5f00c8bd	Challenge 259: FizzBuzz Explosion	29	challenge-259

--description--

Given an integer, return the number of steps it takes to turn the word "fizzbuzz" into a string with at least the given number of "z"'s using the following rules:

• Start with the string "fizzbuzz".
• Each step, apply the standard FizzBuzz rules using the letter position in the string (the first "f" is position 1).
  • If the letter position is divisible by 3, replace the letter with "fizz"
  • If it's divisible by 5, replace the letter with "buzz"
  • If it's divisible by 3 and 5, replace the letter with "fizzbuzz"

So after 1 step, "fizzbuzz" turns into "fifizzzbuzzfizzzz", which has 9 "z"'s.

--hints--

explode_fizzbuzz(9) should return 1.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(9), 1)`)
}})

explode_fizzbuzz(15) should return 2.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(15), 2)`)
}})

explode_fizzbuzz(51) should return 3.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(51), 3)`)
}})

explode_fizzbuzz(52) should return 4.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(52), 4)`)
}})

explode_fizzbuzz(359) should return 5.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(359), 5)`)
}})

explode_fizzbuzz(789) should return 6.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(789), 6)`)
}})

explode_fizzbuzz(54482) should return 11.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(54482), 11)`)
}})

explode_fizzbuzz(1000000) should return 14.

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(explode_fizzbuzz(1000000), 14)`)
}})

--seed--

--seed-contents--

def explode_fizzbuzz(target_z_count):

    return target_z_count

--solutions--

def explode_fizzbuzz(target_z_count):
    s = "fizzbuzz"
    steps = 0
    while s.count('z') < target_z_count:
        next_s = ""
        for i, c in enumerate(s):
            pos = i + 1
            if pos % 15 == 0:
                next_s += "fizzbuzz"
            elif pos % 3 == 0:
                next_s += "fizz"
            elif pos % 5 == 0:
                next_s += "buzz"
            else:
                next_s += c
        s = next_s
        steps += 1
    return steps