🔁 Two Pointer Problems

Welcome to the Two Pointer section of JDCodebase!

The two-pointer technique is one of the most powerful tools to reduce time complexity in array and string problems. It helps avoid nested loops and makes your solution more efficient.

🛠️ Basic Approach

- Start with two pointers, usually at the beginning and end of the array (or both at the beginning).
- Move the pointers based on conditions, narrowing the problem space.
- Continue until the pointers meet or cross.

📚 Common Patterns

Opposite Direction: Start one pointer from the beginning and the other from the end. Useful for problems like reversing, finding pairs, etc.
Same Direction: Both pointers start from the beginning and one lags behind the other. This is common in sliding window problems.
Nested Pointer Logic: One pointer iterates and another explores ahead. Used in problems like merging arrays, removing duplicates, etc.

🔁 Two Pointer Problems

🛠️ Basic Approach

📚 Common Patterns

📝 Problems List