midStrings
Longest Common Prefix among an array of strings.
Updated Apr 28, 2026
Short answer
Compare characters index by index across all strings until a mismatch occurs.
Deep explanation
Intermediate string problems test your ability to use frequency maps and sliding windows. Compare characters index by index across all strings until a mismatch occurs.
Real-world example
Search filters that ignore character order.
Common mistakes
- Inefficiently sorting strings for an anagram check when a frequency map is O(n).
Follow-up questions
- What is the time complexity of sorting?