Leaf Processing Pattern focuses on operations involving the leaves of a binary tree. In this pattern, we analyze and manipulate the tree's leaf nodes, which have no children. This approach is useful in various problems where we need to extract information specifically from the leaves, such as finding the sum of all left leaves or counting the total number of leaves.

Here, the overall approach involves traversing the binary tree using techniques like DFS (Depth-First Search) or BFS (Breadth-First Search), and identifying the leaf nodes and performing the required operations