A common technical interview question asks candidates to reverse an array in-place. This exercise tests understanding of indexing, boundaries, and memory management. The Go language provides clean syntax and multiple assignment, making an efficient, readable solution straightforward to implement.

The algorithm uses a two-pointer approach, swapping elements from the outer edges toward the center. It only iterates through half the range, ensuring an O(1) space complexity. Go's multiple assignment allows for a concise swap operation, modifying the original slice without allocating new memory.

Proper input validation is critical. The function must check that indices are within bounds and that the start index is less than the end index. A comprehensive test suite verifies the correct output and confirms the operation modified the original array in-place, a key requirement for efficient algorithms.