RosettaCodeData/Task/Longest-string-challenge/Python/longest-string-challenge.py

17 lines
345 B
Python

import fileinput
# return len(a) - len(b) if positive, 0 otherwise
def longer(a, b):
while len(a) and len(b):
a, b = a[1:], b[1:]
return len(a)
longest, lines = '', ''
for x in fileinput.input():
if longer(x, longest):
lines, longest = x, x
elif not longer(longest, x):
lines += x
print(lines, end='')