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do_lists_overlap.py
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do_lists_overlap.py
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import functools
from is_list_cyclic import has_cycle
from do_terminated_lists_overlap import overlapping_no_cycle_lists
from test_framework.test_failure import TestFailure
from test_framework.test_utils import enable_executor_hook
def overlapping_lists(l0, l1):
# Implement this placeholder.
return None
@enable_executor_hook
def overlapping_lists_wrapper(executor, l0, l1, common, cycle0, cycle1):
if common:
if not l0:
l0 = common
else:
it = l0
while it.next:
it = it.next
it.next = common
if not l1:
l1 = common
else:
it = l1
while it.next:
it = it.next
it.next = common
if cycle0 != -1 and l0:
last = l0
while last.next:
last = last.next
it = l0
for _ in range(cycle0):
if not it:
raise RuntimeError('Invalid input data')
it = it.next
last.next = it
if cycle1 != -1 and l1:
last = l1
while last.next:
last = last.next
it = l1
for _ in range(cycle1):
if not it:
raise RuntimeError('Invalid input data')
it = it.next
last.next = it
common_nodes = set()
it = common
while it and id(it) not in common_nodes:
common_nodes.add(id(it))
it = it.next
result = executor.run(functools.partial(overlapping_lists, l0, l1))
if not (id(result) in common_nodes or (not common_nodes and not result)):
raise TestFailure('Invalid result')
from sys import exit
from test_framework import generic_test, test_utils
if __name__ == '__main__':
# The timeout is set to 30 seconds.
# If your program ends with TIMEOUT error probably it stuck in an infinity loop,
# You can extend the limit by changing the following line.
timeout_seconds = 30
exit(
generic_test.generic_test_main(timeout_seconds, 'do_lists_overlap.tsv',
overlapping_lists_wrapper))