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* Add butterfly pattern implementation * Add butterfly pattern implementation * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Add finalized butterfly pattern implementation and test * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Delete graphics/test_butterfly_pattern.py * Update butterfly_pattern.py * Update butterfly_pattern.py * Update butterfly_pattern.py * Update butterfly_pattern.py * Update butterfly_pattern.py --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>
47 lines
1010 B
Python
47 lines
1010 B
Python
def butterfly_pattern(n: int) -> str:
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"""
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Creates a butterfly pattern of size n and returns it as a string.
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>>> print(butterfly_pattern(3))
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* *
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** **
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*****
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** **
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* *
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>>> print(butterfly_pattern(5))
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* *
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** **
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*** ***
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**** ****
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*********
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**** ****
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*** ***
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** **
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* *
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"""
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result = []
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# Upper part
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for i in range(1, n):
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left_stars = "*" * i
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spaces = " " * (2 * (n - i) - 1)
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right_stars = "*" * i
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result.append(left_stars + spaces + right_stars)
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# Middle part
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result.append("*" * (2 * n - 1))
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# Lower part
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for i in range(n - 1, 0, -1):
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left_stars = "*" * i
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spaces = " " * (2 * (n - i) - 1)
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right_stars = "*" * i
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result.append(left_stars + spaces + right_stars)
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return "\n".join(result)
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if __name__ == "__main__":
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n = int(input("Enter the size of the butterfly pattern: "))
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print(butterfly_pattern(n))
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