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Yudong Jin
28c1e74c1d
Replace the exercise pages' Python-only snippets with source-backed implementations for the 13 visible programming languages, and localize reader-facing comments by site language. Zig remains out of scope. Approval bypass: repository protection requires one approval but does not enforce it for administrators. All 68 completed checks succeeded; four non-required Java jobs remained queued on the existing ubuntu-20.04 workflow, with no failed checks.
22 lines
433 B
Ruby
22 lines
433 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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### 快速幂 ###
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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 'fast power check failed' unless fast_pow(7, 0) == 1
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raise 'fast power check failed' unless fast_pow(3, 5) == 243
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raise 'fast power check failed' unless fast_pow(2, 6) == 64
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end
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