### Set 1

#### Hashmaps
1. [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/)
2. [Group Anagrams](https://leetcode.com/problems/group-anagrams/)

#### Dynamic Programming
3. [Unique Paths II](https://leetcode.com/problems/unique-paths-ii/)

### Set 2

#### Hashmaps
1. [Top K Frequent Words](https://leetcode.com/problems/top-k-frequent-words/)
2. [Subarray Sum Equals K](https://leetcode.com/problems/subarray-sum-equals-k/)

#### Dynamic Programming
3. [Edit Distance](https://leetcode.com/problems/edit-distance/)

### Set 3

#### Hashmaps
1. [Find All Anagrams in a String](https://leetcode.com/problems/find-all-anagrams-in-a-string/)
2. [Continuous Subarray Sum](https://leetcode.com/problems/continuous-subarray-sum/)

#### Dynamic Programming
3. [Coin Change](https://leetcode.com/problems/coin-change/)

### Set 4

#### Hashmaps
1. [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/) (Acceptance: 45%)
2. [Word Pattern](https://leetcode.com/problems/word-pattern/) (Acceptance: 39%)

#### Dynamic Programming
3. [Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring/) (Acceptance: 45%)

### Set 5

#### Hashmaps
1. [4Sum II](https://leetcode.com/problems/4sum-ii/) (Acceptance: 44%)
2. [Subarrays with K Different Integers](https://leetcode.com/problems/subarrays-with-k-different-integers/) (Acceptance: 40%)

#### Dynamic Programming
3. [Palindrome Partitioning II](https://leetcode.com/problems/palindrome-partitioning-ii/) (Acceptance: 40%)

### Set 6

#### Hashmaps
1. [Minimum Window Substring](https://leetcode.com/problems/minimum-window-substring/) (Acceptance: 40%)
2. [Continuous Subarray Sum](https://leetcode.com/problems/continuous-subarray-sum/) (Acceptance: 41%)

#### Dynamic Programming
3. [Decode Ways](https://leetcode.com/problems/decode-ways/) (Acceptance: 42%)