## 2021 November Daily Challenge

### Accounts Merge | LeetCode | Solution Explained

LeetCode 721. Accounts Merge. I explain the solution in detail using the data structure: Disjoint Set Union or...

### Product of Array Except Self | LeetCode | Solution Explained

LeetCode 238. Product of Array Except Self. I explain the intuitions and observations and explain the solution in...

### Largest Component Size by Common Factor | LeetCode | Solution Explained

Largest Component Size by Common Factor. I make this problem easy by explaining the solution in an...

### Kth Smallest Number in Multiplication Table | LeetCode | Solution Explained

668. Kth Smallest Number in Multiplication Table. I explain the binary search approach in detail along with visuals...

### Daily Temperatures | LeetCode | Stack Solution Explained

ily Temperatures LeetCode becomes easier to solve with the knowledge of Next Greatest Element (NGE). I explain...

### Number of Valid Words for Each Puzzle | LeetCode | Bitmaksing Solution Explained in Detail

LeetCode 1178. Number of Valid Words for Each Puzzle. Seems hard, but is a breakdown of a couple...

### Unique Binary Search Trees | LeetCode | DP Solution, Explained

LeetCode 96. Unique Binary Search Trees. I explain the Dynamic Programming Solution in detail, along with intuitions on...

### Multiply Strings | LeetCode | Observation Based Approach, Explained

LeetCode 43. Multiply Strings. I explain the Observation Based Approach using simple maths in detail along with the...

### Single Number III | LeetCode | Bit Manipulation Solution Explained

LeetCode 260. Single Number III. I explain the bit-masking solution in detail, with the help of some neat...

### Unique Paths III | Backtracking Solution Explained

LeetCode 980. Unique Paths III. We are going to look at the backtracking approach in detail using visuals...