.. _leetcode-0003: ================================================================ :badge:`MEDIUM,badge-warning` 0003. Longest Substring Without Repeating Characters ================================================================ ------------------------- Problem Statement ------------------------- `Leetcode Link `_ -------------------------- Examples -------------------------- --------------------- Solution --------------------- .. tab:: O(N^2) Time and O(N) Space complexity .. literalinclude:: solution_1.py :caption: Solution :linenos: :language: python .. tab:: Sliding Window Implementation This implementation uses what is called a `Sliding Window Iterator `_ This is used when there are problems using a substring. .. literalinclude:: solution_2.py :caption: Solution :linenos: :language: python