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#!/bin/env python3.4 | |
# -*- mode:python; coding:utf-8; -*- | |
""" | |
make10.py | |
@author hanepjiv <hanepjiv@gmail.com> | |
@since 2015/06/28 | |
@date 2015/06/28 | |
""" | |
# ############################################################################## | |
# The MIT License (MIT) | |
# | |
# Copyright (c) <2015> hanepjiv <hanepjiv@gmail.com> | |
# | |
# Permission is hereby granted, free of charge, to any person obtaining a copy | |
# of this software and associated documentation files (the "Software"), to deal | |
# in the Software without restriction, including without limitation the rights | |
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
# copies of the Software, and to permit persons to whom the Software is | |
# furnished to do so, subject to the following conditions: | |
# | |
# The above copyright notice and this permission notice shall be included in | |
# all copies or substantial portions of the Software. | |
# | |
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
# THE SOFTWARE. | |
# ############################################################################## | |
# ============================================================================== | |
CURRENT = 0 | |
AGE = 0 | |
REVISION = 1 | |
# ============================================================================== | |
MAJOR = CURRENT - AGE | |
VERSION = '{}.{}.{}'.format(MAJOR, AGE, REVISION) | |
# ############################################################################## | |
# ============================================================================== | |
import sys | |
import types | |
import unittest | |
from itertools import product, combinations | |
from inspect import currentframe, getframeinfo | |
from copy import deepcopy | |
from enum import IntEnum, unique | |
from fractions import Fraction | |
from functools import wraps | |
# ############################################################################## | |
# ============================================================================== | |
@unique | |
class Op(IntEnum): | |
# -------------------------------------------------------------------------- | |
ADD = 0 | |
SUB = 1 | |
RSUB = 2 | |
MUL = 3 | |
DIV = 4 | |
RDIV = 5 | |
# -------------------------------------------------------------------------- | |
@property | |
def swap(self): | |
return [ Op.ADD, Op.RSUB, Op.SUB, Op.MUL, Op.RDIV, Op.DIV, ][self] | |
# -------------------------------------------------------------------------- | |
@property | |
def invert(self): | |
return [ Op.SUB, Op.ADD, None, Op.DIV, Op.MUL, None, ][self] | |
# -------------------------------------------------------------------------- | |
def func(self, x, y): | |
""" | |
>>> Op.ADD.func(1,2) | |
Fraction(3, 1) | |
>>> Op.SUB.func(1,2) | |
Fraction(-1, 1) | |
>>> Op.RSUB.func(1,2) | |
Fraction(1, 1) | |
>>> Op.MUL.func(1,2) | |
Fraction(2, 1) | |
>>> Op.DIV.func(1,2) | |
Fraction(1, 2) | |
>>> Op.RDIV.func(1,2) | |
Fraction(2, 1) | |
""" | |
return ([ Fraction.__add__, | |
Fraction.__sub__, | |
Fraction.__rsub__, | |
Fraction.__mul__, | |
Fraction._div, | |
lambda x, y: Fraction._div(y, x), | |
][self])(x, y) | |
# ------------------------------------------------------------------------- | |
def fmt(self, x, y): | |
return [ '({0} + {1})', '({0} - {1})', '({1} - {0})', | |
'({0} × {1})', '({0} ÷ {1})', '({1} ÷ {0})', | |
][self].format(x, y) | |
# -------------------------------------------------------------------------- | |
def expand_func(self, x, y): | |
return ([ Expand.__add__, | |
Expand.__sub__, | |
lambda x, y: Expand.__sub__(y, x), | |
Expand.__mul__, | |
Expand.__truediv__, | |
lambda x, y: Expand.__truediv__(y, x), | |
][self])(x, y) | |
# ============================================================================== | |
# ------------------------------------------------------------------------------ | |
class Triple: | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __init__(self, a_op, a_lhs, a_rhs): | |
self.op = a_op | |
self.lhs = a_lhs | |
self.rhs = a_rhs | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __str__(self): | |
return self.op.fmt(str(self.lhs), str(self.rhs)) | |
# -------------------------------------------------------------------------- | |
def __repr__(self): | |
return ('{}({}, {}, {})'.format(type(self).__name__, repr(self.op), | |
repr(self.lhs), repr(self.rhs))) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __hash__(self): | |
return (hash(hash(type(self)) ^ | |
hash(self.op) ^ hash(self.lhs) ^ hash(self.rhs))) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __lt__(self, a_rhs): | |
return (str(self).__lt__(str(a_rhs))) | |
# -------------------------------------------------------------------------- | |
def __gt__(self, a_rhs): | |
return a_rhs.__lt__(self) | |
# -------------------------------------------------------------------------- | |
def __le__(self, a_rhs): | |
return (not self.__gt__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
def __ge__(self, a_rhs): | |
return (not self.__lt__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
def __eq__(self, a_rhs): | |
return (not self.__lt__(a_rhs)) and (not self.__gt__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
def __ne__(self, a_rhs): | |
return (not self.__eq__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
@staticmethod | |
def _m_eval_(value): | |
return value.m_eval() if isinstance(value, Triple) else value | |
# -------------------------------------------------------------------------- | |
def m_eval(self): | |
return self.op.func(Triple._m_eval_(self.lhs), | |
Triple._m_eval_(self.rhs)) | |
# -------------------------------------------------------------------------- | |
@staticmethod | |
def _rank_(value): | |
return value.rank() if isinstance(value, Triple) else value | |
# -------------------------------------------------------------------------- | |
def rank(self): | |
return (10 + Triple._rank_(self.lhs) + Triple._rank_(self.rhs)) | |
# -------------------------------------------------------------------------- | |
def swap(self): | |
tmp = self.lhs | |
self.lhs = self.rhs | |
self.rhs = tmp | |
# -------------------------------------------------------------------------- | |
def left(self): | |
if not isinstance(self.rhs, Triple): | |
raise RuntimeError("{}.{}()". | |
format(self, | |
getframeinfo(currentframe()).function)) | |
tmp = self.rhs | |
self.rhs = tmp.rhs | |
tmp.rhs = tmp.lhs | |
tmp.lhs = self.lhs | |
self.lhs = tmp | |
# -------------------------------------------------------------------------- | |
def right(self): | |
if not isinstance(self.lhs, Triple): | |
raise RuntimeError("{}.{}()". | |
format(self, | |
getframeinfo(currentframe()).function)) | |
tmp = self.lhs | |
self.lhs = tmp.lhs | |
tmp.lhs = tmp.rhs | |
tmp.rhs = self.rhs | |
self.rhs = tmp | |
# -------------------------------------------------------------------------- | |
def optimize(self): | |
while self._optimize_(): | |
pass | |
return self | |
# -------------------------------------------------------------------------- | |
def _optimize_(self): | |
optimized = False | |
optimized |= isinstance(self.lhs, Triple) and self.lhs._optimize_() | |
optimized |= isinstance(self.rhs, Triple) and self.rhs._optimize_() | |
if ((self.op in [Op.RSUB, Op.RDIV])): | |
self.swap() | |
self.op = self.op.swap | |
optimized |= True | |
if ((self.op in [Op.SUB, Op.DIV])): | |
if (isinstance(self.rhs, Triple) and (self.op == self.rhs.op)): | |
self.rhs.swap() | |
self.op = self.op.invert | |
optimized |= True | |
elif (isinstance(self.lhs, Triple) and (self.op == self.lhs.op)): | |
self.right() | |
self.rhs.op = self.rhs.op.invert | |
optimized |= True | |
#if ((self.op == Op.DIV) and | |
# (abs(int(Triple._m_eval_(self.rhs))) == 1)): | |
# self.op = Op.MUL | |
# optimized |= True | |
if ((self.op in [Op.ADD, Op.MUL])): | |
if (isinstance(self.lhs, Triple) and (self.op == self.lhs.op)): | |
self.right() | |
optimized |= True | |
elif (isinstance(self.rhs, Triple) and (self.op == self.rhs.op) and | |
(Triple._rank_(self.lhs) > Triple._rank_(self.rhs.lhs))): | |
tmp = self.lhs | |
self.lhs = self.rhs.lhs | |
self.rhs.lhs = tmp | |
optimized |= True | |
if ((self.op in [Op.ADD, Op.MUL]) and | |
(Triple._rank_(self.lhs) > Triple._rank_(self.rhs))): | |
self.swap() | |
optimized |= True | |
return optimized | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
@staticmethod | |
def _expand_(value): | |
if isinstance(value, Triple): | |
return value.expand() | |
elif Fraction(value) != 0: | |
return Expand([Fraction(value)]) | |
else: | |
return Expand([]) | |
# -------------------------------------------------------------------------- | |
def expand(self): | |
return self.op.expand_func(Triple._expand_(self.lhs), | |
Triple._expand_(self.rhs)) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def hasZeroDiv(self): | |
if Op.DIV == self.op: | |
if (not isinstance(self.rhs, Triple)) and 0 == self.rhs: | |
return True | |
elif Op.RDIV == self.op: | |
if (not isinstance(self.lhs, Triple)) and 0 == self.lhs: | |
return True | |
ret = False | |
if isinstance(self.lhs, Triple): | |
ret |= self.lhs.hasZeroDiv() | |
if isinstance(self.rhs, Triple): | |
ret |= self.rhs.hasZeroDiv() | |
return ret | |
# ============================================================================== | |
# ------------------------------------------------------------------------------ | |
def _expand_exp_(a_func): | |
@wraps(a_func) | |
def wrapper(a_rhs, a_lhs): | |
return list(map(lambda x: a_func(x[0], x[1]), | |
product(a_rhs, a_lhs))) | |
return wrapper | |
# ------------------------------------------------------------------------------ | |
class Expand: | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
_VAL_VALID_TYPE_ = [ | |
list, | |
tuple, | |
] | |
# -------------------------------------------------------------------------- | |
@classmethod | |
def validate(cls, a_val): | |
for i in cls._VAL_VALID_TYPE_: | |
if isinstance(a_val, i): | |
return True | |
return False | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __init__(self, a_val, **kwds): | |
if not Expand.validate(a_val): | |
raise RuntimeError("{}.{}({}): invalid arguments". | |
format(type(self).__name__, | |
getframeinfo(currentframe()).function, | |
a_val)) | |
self.val = a_val | |
self.__dict__.update(kwds) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def optimize(self): | |
if isinstance(self.val, tuple): | |
if self.val[1] == [1]: | |
self.val = self.val[0] | |
return self | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __str__(self): | |
return repr(self) | |
# -------------------------------------------------------------------------- | |
def __repr__(self): | |
return ('{}({})'.format(type(self).__name__, repr(self.val))) | |
# -------------------------------------------------------------------------- | |
def __hash__(self): | |
return (hash(type(self)) ^ hash(repr(self.val))) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __lt__(self, a_rhs): | |
""" | |
>>> Expand([0]) < Expand([0]) | |
False | |
>>> Expand([0]) < Expand([1]) | |
True | |
>>> Expand([1]) < Expand([0]) | |
False | |
""" | |
if isinstance(self.val, list): | |
if isinstance(a_rhs.val, list): | |
return (self.val < a_rhs.val) | |
elif isinstance(a_rhs.val, tuple): | |
return True | |
elif isinstance(self.val, tuple): | |
if isinstance(a_rhs.val, list): | |
return False | |
elif isinstance(a_rhs.val, tuple): | |
return (self.val < a_rhs.val) | |
# -------------------------------------------------------------------------- | |
def __gt__(self, a_rhs): | |
""" | |
>>> Expand([0]) > Expand([0]) | |
False | |
>>> Expand([0]) > Expand([1]) | |
False | |
>>> Expand([1]) > Expand([0]) | |
True | |
""" | |
return a_rhs.__lt__(self) | |
# -------------------------------------------------------------------------- | |
def __le__(self, a_rhs): | |
""" | |
>>> Expand([0]) <= Expand([0]) | |
True | |
>>> Expand([0]) <= Expand([1]) | |
True | |
>>> Expand([1]) <= Expand([0]) | |
False | |
""" | |
return (not self.__gt__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
def __ge__(self, a_rhs): | |
""" | |
>>> Expand([0]) >= Expand([0]) | |
True | |
>>> Expand([0]) >= Expand([1]) | |
False | |
>>> Expand([1]) >= Expand([0]) | |
True | |
""" | |
return (not self.__lt__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
def __eq__(self, a_rhs): | |
""" | |
>>> Expand([0]) == Expand([0]) | |
True | |
>>> Expand([0]) == Expand([1]) | |
False | |
""" | |
return (not self.__lt__(a_rhs)) and (not self.__gt__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
def __ne__(self, a_rhs): | |
""" | |
>>> Expand([0]) != Expand([0]) | |
False | |
>>> Expand([0]) != Expand([1]) | |
True | |
""" | |
return (not self.__eq__(a_rhs)) | |
# -------------------------------------------------------------------------- | |
@_expand_exp_ | |
def _exp_mul_(a_rhs, a_lhs): | |
""" | |
>>> Expand._exp_mul_([0, 1], [1, 2]) | |
[0, 0, 1, 2] | |
""" | |
return a_rhs * a_lhs | |
# -------------------------------------------------------------------------- | |
@_expand_exp_ | |
def _exp_div_(a_rhs, a_lhs): | |
""" | |
>>> Expand._exp_div_([4, 2], [2, 1]) | |
[2.0, 4.0, 1.0, 2.0] | |
""" | |
return a_rhs / a_lhs | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __add__(self, a_rhs): | |
return (self).__iadd__(a_rhs) | |
# -------------------------------------------------------------------------- | |
def __iadd__(self, a_rhs): | |
sv = self.val | |
rv = a_rhs.val | |
if isinstance(sv, list): | |
if isinstance(rv, list): | |
self.val += rv | |
self.val.sort() | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
self.val = (sorted(Expand._exp_mul_(sv, rv[1]) + rv[0]), rv[1]) | |
return self.optimize() | |
elif isinstance(sv, tuple): | |
if isinstance(rv, list): | |
self.val = (sorted(Expand._exp_mul_(sv[1], rv) + sv[0]), sv[1]) | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
if sv[1] == rv[1]: | |
self.val = (sv[0] + rv[0], sv[1]) | |
return self.optimize() | |
else: | |
self.val = (sorted(Expand._exp_mul_(sv[0], rv[1]) + | |
Expand._exp_mul_(sv[1], rv[0])), | |
sorted(Expand._exp_mul_(sv[1], rv[1]))) | |
return self.optimize() | |
raise RuntimeError("{}.{}({})". | |
format(self, getframeinfo(currentframe()).function, | |
a_rhs)) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __sub__(self, a_rhs): | |
return deepcopy(self).__isub__(a_rhs) | |
# -------------------------------------------------------------------------- | |
def __isub__(self, a_rhs): | |
sv = self.val | |
rv = a_rhs.val | |
if isinstance(sv, list): | |
if isinstance(rv, list): | |
self.val += list(map(lambda x: -x, rv)) | |
self.val.sort() | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
self.val = (sorted(Expand._exp_mul_(sv, rv[1]) + | |
list(map(lambda x: -x, rv[0]))), | |
rv[1]) | |
return self.optimize() | |
elif isinstance(sv, tuple): | |
if isinstance(rv, list): | |
self.val = (sorted(list(map(lambda x: x[0] * -x[1], | |
product(sv[1], rv))) + | |
sv[0]), | |
sv[1]) | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
if sv[1] == rv[1]: | |
self.val = (sv[0] + list(map(lambda x: -x, rv[0])), sv[1]) | |
return self.optimize() | |
else: | |
self.val = (sorted(Expand._exp_mul_(sv[0], rv[1]) + | |
list(map(lambda x: x[0] * -x[1], | |
product(sv[1], rv[0])))), | |
sorted(Expand._exp_mul_(sv[1], rv[1]))) | |
return self.optimize() | |
raise RuntimeError("{}.{}({})". | |
format(self, getframeinfo(currentframe()).function, | |
a_rhs)) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __mul__(self, a_rhs): | |
return deepcopy(self).__imul__(a_rhs) | |
# -------------------------------------------------------------------------- | |
def __imul__(self, a_rhs): | |
sv = self.val | |
rv = a_rhs.val | |
if isinstance(sv, list): | |
if isinstance(rv, list): | |
self.val = Expand._exp_mul_(sv, rv) | |
self.val.sort() | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
self.val = (sorted(Expand._exp_mul_(sv, rv[0])), rv[1]) | |
return self.optimize() | |
elif isinstance(sv, tuple): | |
if isinstance(rv, list): | |
self.val = (sorted(Expand._exp_mul_(sv[0], rv)), sv[1]) | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
self.val = (sorted(Expand._exp_mul_(sv[0], rv[0])), | |
sorted(Expand._exp_mul_(sv[1], rv[1]))) | |
return self.optimize() | |
raise RuntimeError("{}.{}({})". | |
format(self, getframeinfo(currentframe()).function, | |
a_rhs)) | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def __truediv__(self, a_rhs): | |
return deepcopy(self).__itruediv__(a_rhs) | |
# -------------------------------------------------------------------------- | |
def __itruediv__(self, a_rhs): | |
sv = self.val | |
rv = a_rhs.val | |
if isinstance(sv, list): | |
if isinstance(rv, list): | |
self.val = (sv, rv) | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
self.val = (sorted(Expand._exp_mul_(sv, rv[1])), rv[0]) | |
return self.optimize() | |
elif isinstance(sv, tuple): | |
if isinstance(rv, list): | |
self.val = (sorted(Expand._exp_div_(sv[0], rv)), sv[1]) | |
return self.optimize() | |
elif isinstance(rv, tuple): | |
self.val = (sorted(Expand._exp_mul_(sv[0], rv[1])), | |
sorted(Expand._exp_mul_(sv[1], rv[0]))) | |
return self.optimize() | |
raise RuntimeError("{}.{}({})". | |
format(self, getframeinfo(currentframe()).function, | |
a_rhs)) | |
# ------------------------------------------------------------------------------ | |
class ExpandTest(unittest.TestCase): | |
# ========================================================================== | |
def setUp(self): | |
pass | |
# ========================================================================== | |
def tearDown(self): | |
pass | |
# ========================================================================== | |
# -------------------------------------------------------------------------- | |
def test_iadd(self): | |
self.assertEqual(Expand([Fraction(2)]).__iadd__(Expand([Fraction(1)])), | |
Expand([Fraction(1, 1), Fraction(2, 1)])) | |
self.assertEqual(Expand([Fraction(1)]). | |
__iadd__(Expand(([Fraction(2)], [Fraction(3)]))), | |
Expand(([Fraction(2, 1), Fraction(3, 1)], | |
[Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__iadd__(Expand([Fraction(1)])), | |
Expand(([Fraction(2, 1), Fraction(3, 1)], | |
[Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__iadd__(Expand(([Fraction(4)], [Fraction(1)]))), | |
Expand(([Fraction(2, 1), Fraction(12, 1)], | |
[Fraction(3, 1)]))) | |
# -------------------------------------------------------------------------- | |
def test_isub(self): | |
self.assertEqual(Expand([Fraction(2)]).__isub__(Expand([Fraction(1)])), | |
Expand([Fraction(-1, 1), Fraction(2, 1)])) | |
self.assertEqual(Expand([Fraction(1)]). | |
__isub__(Expand(([Fraction(2)], [Fraction(3)]))), | |
Expand(([Fraction(-2, 1), Fraction(3, 1)], | |
[Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__isub__(Expand([Fraction(1)])), | |
Expand(([Fraction(-3, 1), Fraction(2, 1)], | |
[Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__isub__(Expand(([Fraction(4)], [Fraction(1)]))), | |
Expand(([Fraction(-12, 1), Fraction(2, 1)], | |
[Fraction(3, 1)]))) | |
# -------------------------------------------------------------------------- | |
def test_imul(self): | |
self.assertEqual(Expand([Fraction(2)]).__imul__(Expand([Fraction(1)])), | |
Expand([Fraction(2, 1)])) | |
self.assertEqual(Expand([Fraction(1)]). | |
__imul__(Expand(([Fraction(2)], [Fraction(3)]))), | |
Expand(([Fraction(2, 1)], [Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__imul__(Expand([Fraction(1)])), | |
Expand(([Fraction(2, 1)], [Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__imul__(Expand(([Fraction(4)], [Fraction(1)]))), | |
Expand(([Fraction(8, 1)], [Fraction(3, 1)]))) | |
# -------------------------------------------------------------------------- | |
def test_itruediv(self): | |
self.assertEqual(Expand([Fraction(2)]). | |
__itruediv__(Expand([Fraction(3)])), | |
Expand(([Fraction(2, 1)], [Fraction(3, 1)]))) | |
self.assertEqual(Expand([Fraction(1)]). | |
__itruediv__(Expand(([Fraction(2)], [Fraction(3)]))), | |
Expand(([Fraction(3, 1)], [Fraction(2, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__itruediv__(Expand([Fraction(1)])), | |
Expand(([Fraction(2, 1)], [Fraction(3, 1)]))) | |
self.assertEqual(Expand(([Fraction(2)], [Fraction(3)])). | |
__itruediv__(Expand(([Fraction(4)], [Fraction(1)]))), | |
Expand(([Fraction(2, 1)], [Fraction(12, 1)]))) | |
# ############################################################################## | |
# ============================================================================== | |
# ------------------------------------------------------------------------------ | |
def make_M_4_TripleA(n0, n1, n2, n3, o0, o1, o2): | |
return Triple(o2, Triple(o1, Triple(o0, n3, n2), n1), n0) | |
# ------------------------------------------------------------------------------ | |
def make_M_4_TripleB(n0, n1, o0, n2, n3, o1, o2): | |
return Triple(o2, Triple(o1, n3, n2), Triple(o0, n1, n0)) | |
# ============================================================================== | |
# ------------------------------------------------------------------------------ | |
g_PatternA = ( | |
(0, 1, 2, 3), | |
(0, 2, 1, 3), | |
(0, 3, 1, 2), | |
(1, 0, 2, 3), | |
(1, 2, 0, 3), | |
(1, 3, 0, 2), | |
(2, 0, 1, 3), | |
(2, 1, 0, 3), | |
(2, 3, 0, 1), | |
(3, 0, 1, 2), | |
(3, 1, 0, 2), | |
(3, 2, 0, 1), | |
) | |
# ------------------------------------------------------------------------------ | |
g_PatternB = ( | |
(0, 1, 2, 3), | |
(0, 2, 1, 3), | |
(0, 3, 1, 2), | |
) | |
# ============================================================================== | |
def make_M_4_Triple(n, o): | |
# -------------------------------------------------------------------------- | |
for p in g_PatternA: | |
ret = make_M_4_TripleA(n[p[0]], n[p[1]], n[p[2]], n[p[3]], | |
o[0], o[1], o[2]) | |
if not ret.hasZeroDiv(): | |
yield ret | |
for p in g_PatternB: | |
ret = make_M_4_TripleB(n[p[0]], n[p[1]], o[0], n[p[2]], n[p[3]], | |
o[1], o[2]) | |
if not ret.hasZeroDiv(): | |
yield ret | |
# ============================================================================== | |
def make_M_4(l_Input, a_Result): | |
seen = set() | |
n = 0 | |
for num in combinations(l_Input, len(l_Input)): | |
for op in product(list(Op), repeat=len(l_Input)-1): | |
for tri in make_M_4_Triple(num, op): | |
try: | |
if tri.m_eval() == a_Result: | |
e = tri.expand() | |
if e in seen: | |
continue | |
seen.add(e) | |
n += 1 | |
sys.stdout.write("# {} {} == {}\n".format( | |
n, str(tri.optimize()), a_Result)) | |
except (ZeroDivisionError, RuntimeError) as e: | |
# print(tri, e, file=sys.stderr) | |
continue | |
# ############################################################################## | |
# ============================================================================== | |
def load_tests(_loader, tests, _ignore): | |
import doctest | |
tests.addTests(doctest.DocTestSuite(sys.modules[__name__])) | |
return tests | |
# ============================================================================== | |
def _run_test_(): | |
return unittest.main(module=__name__, exit=False).result.wasSuccessful() | |
# ############################################################################## | |
# ============================================================================== | |
def _parse_args_(): | |
# -------------------------------------------------------------------------- | |
import argparse | |
# -------------------------------------------------------------------------- | |
parser = argparse.ArgumentParser() | |
parser.add_argument('-V', '--version', action='version', version=VERSION) | |
parser.add_argument('-n', nargs='?', | |
type=int, default=4, const=4, choices=range(4, 5), | |
help=""" | |
The number of input. | |
""") | |
parser.add_argument('-m', '--make', nargs='?', | |
type=Fraction, default=Fraction(10), const=Fraction(10), | |
help=""" | |
Number you want to create. | |
""") | |
return parser.parse_args() | |
# ============================================================================== | |
if __name__ == '__main__': | |
args = _parse_args_() | |
if args.n != 4: | |
raise RuntimeError("ERROR!: {}: unsupported". | |
format(getframeinfo(currentframe()).function)) | |
print('# Enter the {} numbers'.format(args.n)) | |
g_Input = [] | |
while not args.n == len(g_Input): | |
sys.stdout.write('>>> ') | |
g_Input.append(Fraction(input())) | |
make_M_4(g_Input, a_Result=Fraction(args.make)) |
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