Solutions:
Check these solutions from our community and artificial intelligence:
The candidate's solution is correct and demonstrates a level of completeness. The candidate has correctly identified that binary search is the optimal solution for this problem. The candidate's implementation of binary search is also correct. The only thing that could be improved is the candidate's explanation of the time and space complexity of the solution. The candidate correctly states that the time complexity is O(log n), but does not explain why. The candidate also correctly states that the space complexity is O(1), but again does not explain why.