I am getting RE (Runtime Error). However, the program is producing correct
results without any error on my pc.
import re
patterns = []
list_of_permutations = []
def main():
global patterns
number_of_cases = int(input())
for i in range(number_of_cases):
number_of_patterns = int(input())
patterns = []
for j in range(number_of_patterns):
patterns.append(input())
size, characters = getSize(patterns)
data = [None] * size
is_found, string = combinations(
characters, data, 0, len(characters)-1, 0, size)
if is_found:
print(f'Case #{i+1}: {string}')
else:
print(f'Case #{i+1}: *')
def match_with_patterns(permutation, patterns):
for pattern in patterns:
pattern = re.compile('^' + pattern.replace('*', '.*') + '$')
matches = pattern.match(permutation)
if not matches:
return False
return True
def getSize(patterns):
uniqueCharacters = {}
for pattern in patterns:
for char in pattern:
if char != '*' and char not in uniqueCharacters.keys():
uniqueCharacters[char] = True
max_pattern_size = 0
for pattern in patterns:
pattern = pattern.replace('*', '')
max_pattern_size = max(max_pattern_size, len(pattern))
return max(len(uniqueCharacters), max_pattern_size),
list(uniqueCharacters.keys())
def combinations(arr, data, start, end, index, r):
global list_of_permutations
if index == r:
list_of_permutations = []
list_of_permutations = lop(sorted(''.join(list(data))))
for permutation in list_of_permutations:
is_a_match = match_with_patterns(permutation, patterns)
if is_a_match:
return True, permutation
return False, None
for i in range(start, end+1):
data[index] = arr[i]
is_a_match, permutation = combinations(arr, data, i, end, index+1,
r)
if is_a_match:
return True, permutation
return False, None
# lexicographic permutations
def lop(string):
result = []
result.append(''.join(string))
count = 0
while True:
for i in range(len(string)-1, -1, -1):
if i != 0 and string[i-1] < string[i]:
break
if i == 0:
break
for j in range(len(string)-1, -1, -1):
if string[i-1] < string[j]:
string[i-1], string[j] = string[j], string[i-1]
temp = string[i:]
string = string[:i]
string.extend(list(''.join(temp[::-1])))
result.append(''.join(string))
break
return result
main()
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