That gives me the math for the title of this post. Each test user had a playfield with ~2,200 characters, and each character contains 2 pixels. The game runs at 10 FPS. 2500 * 2200 * 2 * 10 is a little over 100 million! Maybe that’s not a fair measurement, but it’s the one I chose.
if (n <= 1) return;
。搜狗输入法下载对此有专业解读
swap(&arr[0], &arr[i]); // 堆顶(最大)换到末尾
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