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Challenge 44: String Mirror

curriculum/challenges/english/blocks/daily-coding-challenges-python/68b1f72371a5ac895ac70a0a.md

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--description--

Given two strings, determine if the second string is a mirror of the first.

  • A string is considered a mirror if it contains the same letters in reverse order.
  • Treat uppercase and lowercase letters as distinct.
  • Ignore all non-alphabetical characters.

--hints--

is_mirror("helloworld", "helloworld") should return False.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("helloworld", "helloworld"), False)`)
}})

is_mirror("Hello World", "dlroW olleH") should return True.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("Hello World", "dlroW olleH"), True)`)
}})

is_mirror("RaceCar", "raCecaR") should return True.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("RaceCar", "raCecaR"), True)`)
}})

is_mirror("RaceCar", "RaceCar") should return False.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("RaceCar", "RaceCar"), False)`)
}})

is_mirror("Mirror", "rorrim") should return False.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("Mirror", "rorrim"), False)`)
}})

is_mirror("Hello World", "dlroW-olleH") should return True.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("Hello World", "dlroW-olleH"), True)`)
}})

is_mirror("Hello World", "!dlroW !olleH") should return True.

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertIs(is_mirror("Hello World", "!dlroW !olleH"), True)`)
}})

--seed--

--seed-contents--

py
def is_mirror(str1, str2):

    return str1

--solutions--

py
def is_mirror(str1, str2):
    clean1 = "".join(c for c in str1 if c.isalpha())
    clean2 = "".join(c for c in str2 if c.isalpha())
    return clean1[::-1] == clean2