Is there a O(n) way to draw a 2-D array grid instead of O(n²) in C? For instance, I'm wondering if there's a way to use one Is there a O(n) way to draw a 2-D array grid in
阅读背景：
是否有O（n）方法在C中绘制二维阵列网格而不是O（n²）？
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