The tree (hierarchical) structure is one of the elementary memory arrangements, used by numerous data structures – ranging from simple to relatively sophisticated ones. The most well-known tree ...

In computers data structures is the formal way to store or represent any data for its efficient use. Tree is a hierarchical data structure. Tree data structure is commonly used for various problems.

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Binary tree always has nodes with maximum children of 2. Index starts with 1 such that index of j is 1, f is 2, z is 7 and so on. Root is single node always on top of the tree, in this case its j.