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66 lines
2.2 KiB
Python
66 lines
2.2 KiB
Python
# Copyright 2025, Kay Hayen, mailto:kay.hayen@gmail.com find license text at end of file
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# The Computer Language Shootout Benchmarks
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# http://shootout.alioth.debian.org/
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#
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# contributed by Antoine Pitrou
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# modified by Dominique Wahli
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#from sys import argv
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def make_tree(item, depth):
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if depth > 0:
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item2 = 2 * item
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depth -= 1
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return (item, make_tree(item2 - 1, depth), make_tree(item2, depth))
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else:
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return (item, None, None)
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def check_tree(tree):
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(item, left, right) = tree
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if left is not None:
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return item + check_tree(left) - check_tree(right)
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else:
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return item
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def main():
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min_depth = 4
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max_depth = max(min_depth + 2, 16) #int(argv[1]))
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stretch_depth = max_depth + 1
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print "stretch tree of depth %d\t check: %d" % (stretch_depth, check_tree(make_tree(0, stretch_depth)))
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long_lived_tree = make_tree(0, max_depth)
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for depth in xrange(min_depth, stretch_depth, 2):
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iterations = 2**(max_depth - depth + min_depth)
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check = 0
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for i in xrange(1, iterations + 1):
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check += check_tree(make_tree(i, depth)) + check_tree(make_tree(-i, depth))
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print "%d\t trees of depth %d\t check: %d" % (iterations * 2, depth, check)
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print "long lived tree of depth %d\t check: %d" % (max_depth, check_tree(long_lived_tree))
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if __name__ == "__main__":
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main()
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# Python test originally created or extracted from other peoples work. The
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# parts from me are licensed as below. It is at least Free Software where
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# it's copied from other people. In these cases, that will normally be
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# indicated.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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