graph - 图表中的前身？

Question

节点的术语“前驱”是指直接在该节点之前的节点(即节点的父节点)还是指在该节点上方距离 k 处的节点，其中 k>=1。

Answer 1

来自维基百科:

If v is reachable from u, then u is a predecessor of v and v is a successor of u. If there is an arc from u to v, then u is a direct predecessor of v, and v is a direct successor of u.