Longest string challenge: Difference between revisions

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m →‎{{header|REXX}}: added/changed comments and whitespace, used a template for the output.
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<lang python>import fileinput
 
# This returns True if the second string has a value on the
# originally, return len(a) - len(b) if positive, 0 otherwise.
# same index as the last index of the first string. It runs
# Observing that longer is used for its Boolean result,
# faster than trimming the strings because it runs len once
# and that '' is False, while any other string is True,
# and is a single index lookup versus slicing both strings
# longer need only to return a after removing len(b) characters,
# one character at a time.
# which is done without resorting to len().
def longer(a, b):
while a and btry:
a, b = [len(a[1:], b[)-1:]
return aFalse
except:
return True
 
longest, lines = '', ''
Retrieved from "https://rosettacode.org/wiki/Longest_string_challenge"