Greedy Algorithms - Assign Cookies
What is the space complexity of the optimal greedy Assign Cookies solution that sorts the input arrays in-place?
What is the space complexity of the optimal greedy Assign Cookies solution that sorts the input arrays in-place?
medium🪤 Complexity Trap Q6 of Q15
Step-by-Step Solution
Solution:
Step 1: Consider sorting space
In-place sorting like Timsort uses O(log n) stack space for recursion.Step 2: Total space
Sorting both arrays uses O(log n + log m) auxiliary stack space; no extra arrays needed.Final Answer:
Option B -> Option BQuick Check:
In-place sorting recursion stack dominates space [OK]
Quick Trick: In-place sort uses recursion stack space [OK]
Common Mistakes:
MISTAKES- Assuming O(1) always
- Counting input arrays as extra space
- Ignoring recursion stack in sorting
Trap Explanation:
PITFALL- Candidates forget recursion stack space in in-place sorting algorithms.
Interviewer Note:
CONTEXT- Tests understanding of space usage including recursion stack in sorting.
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