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# -*- coding: utf-8 -*-
# vim:set et sts=4 sw=4:
#
# libpinyin - Library to deal with pinyin.
#
# Copyright (C) 2011 Peng Wu <alexepico@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
import os
def shuffle_all(instr):
for output in shuffle_recur(instr):
if output == instr:
continue
yield output
def shuffle_recur(instr):
if len(instr) == 1:
yield instr
else:
for i, ch in enumerate(instr):
recur = instr[:i] + instr[i+1:]
for s in shuffle_recur(recur):
yield ch + s
if __name__ == "__main__":
for s in shuffle_all("abc"):
print(s)
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