Easy · Trees

Print all root to leaf paths

Given the root of a binary tree, return every root-to-leaf path as a list of node values, with the paths ordered by their leaves from left to right (a leaf is a node with no children; an empty tree has no paths).

{
  "tree": [1, 2, 3, 4, 5, null, 6]
}

{
  "tree": [1, 2, 3]
}