Find minimum and most frequent number efficiently

Q: Find minimum and most frequent number efficiently

This question evaluates algorithmic problem-solving and data-structure knowledge, specifically competencies in array traversal, frequency counting, and analysis of time-space complexity and optimization trade-offs.

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Question

Given an unsorted integer array, write functions to: (a) find the minimum value; and (b) find any value that occurs most frequently (if multiple values tie for highest frequency, return any one). Provide a straightforward baseline, then analyze its time and space complexity. Follow-up: Reduce running time by trading additional memory (e.g., using auxiliary data structures); describe the trade-offs and implement the improved version.

Find minimum and most frequent number efficiently

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