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Yudong Jin
7257641e0e
* Retranslate the complete Japanese online edition from Chinese * Fit Japanese homepage labels and localize heading permalinks * Point Japanese contribution instructions to the Japanese preview * Replace locale conditionals with multilingual UI tables
22 lines
517 B
Ruby
22 lines
517 B
Ruby
=begin
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File: fast_power.rb
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Created Time: 2026-08-18
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Author: Hello Algo Team
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=end
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### 高速べき乗法 ###
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def fast_pow(x, n)
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return 1 if n == 0
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half = fast_pow(x, n / 2)
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return half * half if n.even?
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half * half * x
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end
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if __FILE__ == $0
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raise '高速べき乗法の検証に失敗しました' unless fast_pow(7, 0) == 1
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raise '高速べき乗法の検証に失敗しました' unless fast_pow(3, 5) == 243
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raise '高速べき乗法の検証に失敗しました' unless fast_pow(2, 6) == 64
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end
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