a = 'aaabb'
b = 'bbaaa'
def isPerm(firstString, secondString):
# if strings are not equal length, they cannot be permutations
# after sorting alphabetically, if the arrays (sorted returns an array)
# are equal they would be a correct permutation.
return len(firstString) == len(secondString) and sorted(firstString) == sorted(secondString)
print(isPerm(a, b))
YSA9ICdhYWFiYicKYiA9ICdiYmFhYScKCmRlZiBpc1Blcm0oZmlyc3RTdHJpbmcsIHNlY29uZFN0cmluZyk6CgkjIGlmIHN0cmluZ3MgYXJlIG5vdCBlcXVhbCBsZW5ndGgsIHRoZXkgY2Fubm90IGJlIHBlcm11dGF0aW9ucwoJIyBhZnRlciBzb3J0aW5nIGFscGhhYmV0aWNhbGx5LCBpZiB0aGUgYXJyYXlzIChzb3J0ZWQgcmV0dXJucyBhbiBhcnJheSkKCSMgYXJlIGVxdWFsIHRoZXkgd291bGQgYmUgYSBjb3JyZWN0IHBlcm11dGF0aW9uLgoJcmV0dXJuIGxlbihmaXJzdFN0cmluZykgPT0gbGVuKHNlY29uZFN0cmluZykgYW5kIHNvcnRlZChmaXJzdFN0cmluZykgPT0gc29ydGVkKHNlY29uZFN0cmluZykKCQpwcmludChpc1Blcm0oYSwgYikp