LeetCode 165: Compare Version Numbers | Java Solution | Two-Pointer Approach
📌 *Compare Version Numbers* problem requires us to compare two version strings and determine their relationship. #leetcode #versioncomparison #javacode #codinginterview
⏱️ **Time Complexity**: O(N+M) where N and M are the lengths of the version strings
🔍 **Space Complexity**: O(N+M) for the split arrays
TIMESTAMPS
00:00 - Understanding problem statement
01:00 - Two pointers approach
01:36 - Dry run
02:28 - Big O Notation calculated
03:06 - Java code walk-through
04:17 - Solution analysis - runtime + memory
04:24 - Conclusion
KEY CONCEPTS
String Parsing
Two-Pointer Technique
Version Number Comparison
String Splitting
Integer Parsing
LEARNING POINTS
How to efficiently parse version numbers
Handling numeric comparisons between version segments
Managing leading zeros in version numbers
Implementing proper comparison logic for versioning systems
RELATED PROBLEMS
LeetCode 161: One Edit Distance
LeetCode 1062: Longest Repeating Substring
LeetCode 227: Basic Calculator II
LeetCode 8: String to Integer (atoi)
TARGET AUDIENCE
This video is for software engineers preparing for technical interviews, especially those focusing on string manipulation problems in Java.
PREREQUISITES
Basic Java knowledge
Understanding of string operations
Familiarity with parsing techniques
RESOURCES 🔗
LeetCode problem: https://leetcode.com/problems/compare...
Solution code: https://leetcode.com/problems/compare...
ADDITIONAL TIPS 💡
Pay special attention to handling the trailing zeros in version numbers
Consider using built-in split() function versus manual parsing tradeoffs
Watch for integer overflow when parsing large version numbers
CALL TO ACTION
If you found this solution helpful, please hit that like button and subscribe for more coding interview prep content! Share your alternative approaches or questions in the comments below. #javainterviewprep #leetcodesolutions #algorithnmtuorials
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