Binary search can be implemented using which programming approaches?

Question

BlackTom AI · Accepted Answer

The question asks about how binary search can be implemented in terms of programming approaches.
Option 1: 'Only with linked lists' — This is incorrect because binary search relies on random access to elements by index, which linked lists do not provide efficiently. In fact, binary search is not natural or efficient on standard singly or doubly linked lists.
Option 2: 'Iterative only' — While you can implement binary search iteratively using a loop with low/high indices, this option incorrectly excludes another valid approach. An iterative implementation is common and correct, but not the only possible approach.
Option 3: 'Only in functional programming' — Functional programming can express binary search, but it is not restricted to it. This statement wrongly asserts exclusivity to functional paradigms, which is false.
Option 4: 'Recursive only' — A recursive implementation of binary search is valid and frequently taught, as the algorithm naturally splits the search range into halves. However, it is not the sole method, since an iterative version also works.
Option 5: 'Both iterative and recursive' — This is true. Binary search can be implemented either iteratively (with a loop and index bounds) or recursively (by narrowing the search range via function calls).
Option 6: 'Only with built-in functions' — Binary search can be implemented in user-defined code and does not require only built-in functions; you can implement it manually in most languages.
In summary, the true statement is that binary search can be implemented using both iterative and recursive approaches, while the other options misstate exclusivity or applicability.

IS 4485-001 Fall 2025 Final Exam

Binary search can be implemented using which programming approaches?

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