--description--

Given a positive integer, return a string with all of the integers from 1 up to, and including, the given number, in numerical order.

For example, given 5, return "12345".

--hints--

sequence(5) should return "12345".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(sequence(5), "12345")`)
}})

sequence(10) should return "12345678910".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(sequence(10), "12345678910")`)
}})

sequence(1) should return "1".

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

sequence(27) should return "123456789101112131415161718192021222324252627".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(sequence(27), "123456789101112131415161718192021222324252627")`)
}})

def sequence(n):

    return n

def sequence(n):
    result = ""
    for i in range(1, n + 1):
        result += str(i)
    return result