Package g1101_1200.s1110_delete_nodes_and_return_forest

Class Solution

  • public class Solution
extends Object
    1110 - Delete Nodes And Return Forest.

    Medium

    Given the root of a binary tree, each node in the tree has a distinct value.

    After deleting all nodes with a value in to_delete, we are left with a forest (a disjoint union of trees).

    Return the roots of the trees in the remaining forest. You may return the result in any order.

    Example 1:

    Input: root = [1,2,3,4,5,6,7], to_delete = [3,5]

    Output: [[1,2,null,4],[6],[7]]

    Example 2:

    Input: root = [1,2,4,null,3], to_delete = [3]

    Output: 1,2,4

    Constraints:

    • The number of nodes in the given tree is at most 1000.
    • Each node has a distinct value between 1 and 1000.
    • to_delete.length <= 1000
    • to_delete contains distinct values between 1 and 1000.

    • Constructor Detail

      • Solution

        public Solution()