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23 lines
437 B
23 lines
437 B
'''
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Author: SJ2050
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Date: 2021-10-16 22:14:07
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LastEditTime: 2021-10-16 22:19:04
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Version: v0.0.1
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Description: Solution for homework5.
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Copyright © 2021 SJ2050
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'''
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if __name__ == '__main__':
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i = 2
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res = 0
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while i <= 100:
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res += (-1)**(i&1)*i
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i += 1
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print(f'result: {res}')
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# 可以使用列表推导式一句话写完
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res = sum([(-1)**(i&1)*i for i in range(2, 101)])
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print(f'result: {res}')
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