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#!python
#
# Perl Weekly Challenge 329
# Task 2
#
# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-329>
#
import sys
# task implementation
# the return value will be printed
def task_2( args ):
string = args[ 0 ]
begin = 0
end = 0
for i in range( 0, len( string ) - 1 ) :
current = string[ i ]
needle = current.upper()
if current.isupper() :
needle = current.lower()
for j in range( i + 1, len( string ) ) :
print( " => ", string[ j ] )
if string[ j ] == needle :
if ( end - begin ) < ( j - i ) :
begin = i
end = j
return string[ begin : end + 1 ]
# invoke the main without the command itself
if __name__ == '__main__':
print( task_2( sys.argv[ 1: ] ) )
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