NAPI

The article benchmarks two system-level algorithm capabilities in HarmonyOS 7 (API 26) FAST Kit within a single reproducible project: natural-language sorting and 4096-point real FFT. Sorting shows a clear time advantage on lists of 10k+ items, while FFT runs at roughly 0.02-0.03 ms per call, though both expose only Native C APIs requiring custom NAPI bridging and leave windowing and amplitude calibration to the app.