Can you identify the 18th largest element in this array?

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

Coding question

Coding questions assess your programming abilities and thought process. Showcase your problem-solving approach, coding style, knowledge of data structures, and ability to write clean, efficient, and maintainable code.

Here's a Hint

Consider both sorting approaches (O(n log n)) and selection algorithms like QuickSelect (O(n) average case) to find the kth largest element efficiently.