Intervals - Merge Intervals
What is the output of the merge intervals function when given the input intervals = [[5,5]] (a single interval with zero length)?
What is the output of the merge intervals function when given the input intervals = [[5,5]] (a single interval with zero length)?
medium🧾 Code Trace Q4 of Q15
Step-by-Step Solution
Solution:
Step 1: Sort intervals
Single interval [[5,5]] remains unchanged after sorting.Step 2: Merge logic on single interval
No other intervals to merge with, so output is the same single interval.Final Answer:
Option C -> Option CQuick Check:
Single interval input returns itself [OK]
Quick Trick: Single interval input returns itself unchanged [OK]
Common Mistakes:
MISTAKES- Assuming empty output for zero-length intervals
- Adding extra intervals mistakenly
Trap Explanation:
PITFALL- Candidates may incorrectly handle single-element or zero-length intervals as empty or duplicated.
Interviewer Note:
CONTEXT- Tests boundary condition handling in code trace.
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