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By contrast, Ofcom regards 10Mbps download, and 1Mbps upload as "decent" for domestic broadband - that's 150 times less bandwidth than needed for a Champions League game.
，这一点在WPS官方版本下载中也有详细论述
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.
swap(&arr[low], &arr[randomIdx]); // 基准换到开头