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Data Structures & Algorithms In Go

Solution Review: Print Depth First Without Using the Recursion

Explore how to implement depth-first traversal of a tree without recursion by using a stack instead of system stack calls. Understand the step-by-step approach to traverse nodes iteratively, manage the stack, print node values, and analyze the solution’s time and space complexity for effective tree processing.

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Solution

Typically, the depth-first traversal of a tree is done by using the system stack recursion. However, the same can be implemented by using a stack data structure as well. The following code demonstrates the latter approach. In the beginning, root node reference is added to the stack. The whole tree is traversed ...