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例如,让我们在左列中取两组节点 n1、n2 和右列中的 n3、n4
现在 (n1,n3) 和 (n1,n4) 之间有边。节点 n2 没有边。这样的图是二分图吗?
正如@Jan Dvorak 在上面的评论中所建议的那样,答案是“是”