rsjohnson performance improvements

[rsjohnson94102]

• rsjohnson
• rsjohnson: v2
• rsjohnson: new version
• rsjohnson: Use threads
• rsjohnson3: Speedup

[codspeed-hq]

Merging this PR will improve performance by ×10

⚡ 5 improved benchmarks
✅ 1 untouched benchmark

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	test_bench_compute_histogram[baseline]	10.7 s	3.5 s	×3.1
⚡	test_bench_compute_histogram[solution]	9.4 s	3.5 s	×2.7
⚡	test_bench_find_corruptions[baseline]	10,661.5 ms	191.2 ms	×56
⚡	test_bench_find_matches[solution]	5.8 s	1.2 s	×4.8
⚡	test_bench_find_corruptions[solution]	10,750 ms	191.3 ms	×56

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing rsjohnson94102:rsjohnson4 (5b07a1b) with main (72790a0)}