LeetCode 9: Palindrome Number | Java Solution | Two-Pointer Technique
📝 A deep dive into the palindrome number problem where we determine if an integer reads the same backward as forward #leetcode #palindrome #javacode #codinginterview
⏱️ Optimal Solution: Time Complexity O(log n) | Space Complexity O(1)
Timestamps
00:00 - Understanding problem statement
00:39 - Using string conversion
00:55 - Big O Notation explained
01:31 - Optimal solution
03:33 - Big O Notation explained
04:03 - Java code walk-through
05:05 - Solution analysis - runtime + memory
05:12 - Conclusion
Key Concepts Covered
🔑 Palindrome properties
🔑 Two-pointer technique
🔑 Number manipulation
🔑 Integer reversal algorithm
🔑 Edge case handling
Learning Points
💡 How to efficiently check palindromic properties without string conversion
💡 Techniques to handle negative numbers and edge cases
💡 Understanding the mathematical approach to reverse digits
💡 Optimizing palindrome checks for better performance
Related Problems
LeetCode 125: Valid Palindrome
LeetCode 234: Palindrome Linked List
LeetCode 5: Longest Palindromic Substring
LeetCode 680: Valid Palindrome II
Target Audience
👨💻 This video is perfect for coding interview candidates, computer science students, and software engineers looking to strengthen their problem-solving skills with #numberproblems and #palindromechecks.
Prerequisites
Basic understanding of Java syntax
Familiarity with fundamental programming concepts
Knowledge of time and space complexity
Useful Links
🔗 Problem: https://leetcode.com/problems/palindr...
🔗 Solution Code: https://leetcode.com/problems/palindr...
Additional Tips
Emphasize why converting to string is not the optimal approach
Demonstrate pitfalls with the division approach for number reversal
Explain how to handle edge cases like negative numbers and multiples of 10
Call to Action
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