For a binary tree, if its pre-order travel sequence is { 4, 2, 1

For a binary tree, if its pre-order travel sequence is { 4, 2, 1, 3, 6, 5, 7 }, and its in-order travel sequence is { 1, 2, 3, 4, 5, 6, 7 }, then 4 is the parent of 2. ~@[](2)

答案：TRUE