In Vertical Order Traversal, if two nodes share the same horizontal distance, what determines their order?

In Vertical Order Traversal of a binary tree, if two nodes share the same horizontal distance (or vertical level), their order is determined by their positions in the binary tree based on their depth. Specifically:

1. Depth Level: Nodes that are deeper in the tree (have greater depth) are placed after nodes that are shallower (have lesser depth) at the same horizontal distance. This means that for nodes at the same vertical level, the node that appears higher in the tree is processed before the one that appears lower.

2. Left to Right: In scenarios where two nodes are at the same depth level and horizontal distance (which is quite rare, but can happen in special tree configurations), the node that appears to the left (in the tree structure) is given precedence over the node that appears to the right.

This ordering method ensures a systematic way of processing and displaying nodes in a vertical traversal, leading to an unambiguous and consistent output.