“Binary Tree Level Order Traversal II" returns level order tree traversal in a bottom-up manner

“Binary Tree Level Order Traversal II" is an algorithmic problem that involves traversing a binary tree and returning its level order traversal in a bottom-up manner.

The task is to organize the nodes of the tree into levels and store these levels in reverse order from the bottom-up perspective.

The solution typically involves using a breadth-first search (BFS) approach, where you traverse the tree level by level.

Nodes at each level are stored in separate arrays or lists.

Once the traversal is complete, the resulting lists are reversed to obtain the bottom-up level order traversal of the binary tree.

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Time Complexity = O(n), where 'n' is the number of nodes

Space Complexity = O(n), where 'n' is the number of nodes

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