README.md

Algorithms Practice

AlgoExpert Algorithm Questions

Binary Search Trees

1. Binary Search Tree Construction
2. Finding Closest Value in BST:
   • Recursive Method
   • Iterative Method
3. Validate BST
4. BST Traversal
5. Min Height BST
   • Naive Approach
   • Improved Approach
   • Improved Approach with Cleaner Code

Searching

1. Binary Search:
   • Recursive Method
   • Iterative Method
2. Find Three Largest Numbers
3. Search in Sorted Matrix
4. Shifted Binary Search:
   • Recursive Method
   • Iterative Method
5. Search For Range:
   • Recursive Method
   • Iterative Method
6. Quick Select
7. Index Equals Value:
   • Brute Force Method
   • Recursive Method
   • Iterative Method

Sorting

1. Bubble Sort
2. Insertion Sort
3. Selection Sort
4. Three Number Sort
   • First Method
   • Second Method
   • One Pass Method
5. Quick Sort
6. Heap Sort
7. Radix Sort
8. Merge Sort
   • First Method
   • Second Method
9. Count Inversions

LeetCode Problems

LeetCode 75

1. Merge Strings Alternately
2. Greatest Common Divisor of Strings
3. Kids with the Greatest Number of Candies
4. Can Place Flowers
5. Reverse Vowels of a String
6. Reverse Words in a String
7. Product of Array Except Self
8. Increasing Triplet Sequence
9. String Compression
10. Move Zeros
11. Is Subsequence
12. Container with Most Water
13. Max Number of K-Sum Pairs
14. Maximum Average Subarray I
15. Maximum Number of Vowels in a Substring of Given Length

NeetCode 150

Arrays & Hashing

1. Contains Duplicate
2. Valid Anagram
3. Two Sum
4. Group Anagrams
5. Top K Frequent Elements
6. Encode and Decode Strings
7. Product of Array Except Self
8. Valid Sudoku
9. Longest Consecutive Sequence

Two Pointers

10. Valid Palindrome
11. Two Sum II - Input Array is Sorted
12. 3Sum