Randomness/Denoising
output[count[idx] - 1] = arr[i]; // 放到正确位置
，更多细节参见体育直播
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Writing specifications is not always easy, but it is easier than writing the optimized implementation. And a powerful shortcut exists: an inefficient program that is obviously correct can serve as its own specification. User and AI co-write a simple model, AI writes an efficient version, and proves the two equivalent. The hard part shifts from implementation to design. That is the right kind of hard.
https://source.android.com/docs/core/camera/camera3