- stack
84. Largest Rectangle in Histogram
- sliding window
239. Sliding Window Maximum.py
- Arrays & Hashing
238. Product of Array Except Self
- Two Pointer
42. Trapping Rain Water
11. Container With Most Water
15. 3Sum
- Sliding Window
3. Longest Substring Without Repeating Characters
424. Longest Repeating Character Replacement
567. Permutation in String
76. Minimum Window Substring
239. Sliding Window Maximum
- Stack
155. Min Stack
22. Generate_Parentheses
853. Car Fleet
- Binary Search
74. Search a 2D Matrix
875. Koko Eating Bananas
33. Search in Rotated Sorted Array
981. Time Based Key-Value Store
4. Median of Two Sorted Arrays
- Linked List
21. Merge Two Sorted Lists
206. Reverse Linked List
143. Reorder List
19. Remove Nth Node From End of List