Algo
The two-pointer technique is a common algorithmic strategy used to solve problems that involve iterating through an array, a string, or other sequential structures. It uses two pointers, usually starting at opposite ends or at specific positions, which move toward each other or in a specific direction to solve the problem in an efficient manner.
- Efficient time complexity: Often reduces problems from O(n^2) to O(n).
- Simple and easy to implement for array-based problems.
Optimized for time complexity:Typically reduces time complexity from quadratic (O(n^2)) to linear (O(n)).Easy to implement:Simple logic compared to other advanced algorithms.Ideal for certain problem types:Especially useful for array and string-related problems like searching, sorting, and validation.
