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short for long repeat solution in Speedy category for Long Repeat by barrettpaulj
from itertools import groupby
def long_repeat(line: str) -> int:
"""
length the longest substring that consists of the same char
"""
return max([len(list(v)) for k,v in groupby(line)]) if line else 0
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert long_repeat('sdsffffse') == 4, "First"
assert long_repeat('ddvvrwwwrggg') == 3, "Second"
assert long_repeat('abababaab') == 2, "Third"
assert long_repeat('') == 0, "Empty"
print('"Run" is good. How is "Check"?')
Sept. 30, 2019
