Grind 169 List

Sliding Window / 2 Pointer

Problem	Last Completed
Longest Substring Without Repeating Characters	12/04/25
Container With Most Water	29/04/25
Remove Nth Node From End of List
Trapping Rain Water	06/03/25
Minimum Size Subarray Sum	09/03/25
Sort Colors	04/03/25
Find All Anagrams in a String	05/03/25
3 Sum	06/03/25
Rotate List	26/04/25

Prefix/Suffix Sum

Problem	Last Completed
Product of Array Except Self

DFS

Problem	Last Completed
Binary Tree Level Order Traversal
Validate Binary Search Tree
Pacific Atlantic Water Flow	14/04/25
Word Search	26/04/25
Accounts Merge	28/04/25

BFS

Problem	Last Completed
Number of Islands	05/03/25
01 Matrix	06/03/25
Rotting Oranges	20/03/25
Pacific Atlantic Water Flow	14/04/25

DP

Problem	Last Completed
Maximum Subarray	14/04/25
Coin Change	17/05/25
House Robber	17/05/25
Climbing Stairs	29/04/25
Jump Game	17/05/25

Binary Search

| Median of Two Sorted Arrays | 09/03/25 |

Monotonic Stack

| Daily Temperatures | 25/04/25 |

Custom Sort

| Largest Number | 26/04/25 |

Heap / Priority Queue

Problem	Last Completed
K Closest Points to Origin	19/05/25
Top K Frequent Words	19/05/25
Find K Closest Elements	19/05/25
Kth Largest Element in an Array	19/05/25

Matrix Simulation

Problem	Last Completed
Game of Life	09/03/25

Hashing / Map

Problem	Last Completed
Group Anagrams

Trie

Problem	Last Completed
Implement Trie (Prefix Tree)

Design / Cache

Problem	Last Completed
LRU Cache