freecodecamp--freecodecamp/curriculum/challenges/english/blocks/daily-coding-challenges-python/69b58ce40693f140c84c855b.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
69b58ce40693f140c84c855b	Challenge 242: Next Bingo Number	29	challenge-242

--description--

Given a bingo number, return the next bingo number sequentially.

A bingo number is a single letter followed by a number in its range according to this chart:

Letter	Number Range
"B"	1-15
"I"	16-30
"N"	31-45
"G"	46-60
"O"	61-75

For example, given "B10", return "B11", the next bingo number. If given the last bingo number, return "B1".

--hints--

get_next_bingo_number("B10") should return "B11".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_next_bingo_number("B10"), "B11")`)
}})

get_next_bingo_number("N33") should return "N34".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_next_bingo_number("N33"), "N34")`)
}})

get_next_bingo_number("I30") should return "N31".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_next_bingo_number("I30"), "N31")`)
}})

get_next_bingo_number("G60") should return "O61".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_next_bingo_number("G60"), "O61")`)
}})

get_next_bingo_number("O75") should return "B1".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_next_bingo_number("O75"), "B1")`)
}})

--seed--

--seed-contents--

def get_next_bingo_number(n):

    return n

--solutions--

def get_next_bingo_number(n):
    num = int(n[1:])
    next_num = 1 if num == 75 else num + 1

    if next_num <= 15:
        return "B" + str(next_num)
    if next_num <= 30:
        return "I" + str(next_num)
    if next_num <= 45:
        return "N" + str(next_num)
    if next_num <= 60:
        return "G" + str(next_num)
    return "O" + str(next_num)