But that’s a lot of resetting! We can save a bunch of bandwidth by instead tracking the current foreground and background color in our renderer and only emitting a new color escape sequence when our desired color changes. This is an annoying amount of bookkeeping but it substantially cuts down on the amount of escape codes emitted.
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int pivotIdx = partition(arr, low, high); // 分区并获取pivot位置
Марина Совина (ночной редактор)