The Array shows a hierarchical structure. Arrays are immutable. Container that stores the elements of similar types.
Tree is a hierarchical (or non-linear) data structure, as opposed to the linear data structures Array and Linked List. If you wish to store data that naturally develops a hierarchy, one reason to use trees might be for that.
In programming, data structures are objects that may hold many types of data in an organised manner so that we can process them effectively. The efficient processing may take into account time, space, or both, or it may base its decision on another element as a priority that is required for a particular issue.
Algorithms are well-defined sets of instructions, procedures, or logic that, when followed, enable the completion of a certain task.
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