DSA-Swift

Data Structures and Algorithms in Swift

Note: Most of problems have been picked from leetcode.

Language

• Swift 5.0

Data Structure

Tree

1. Diameter of Binary Tree
2. Invert Binary Tree
3. Kth Smallest Element in a BST
4. LCA of a Binary Tree
5. Level Order Traversal
6. Maximum Depth of Binary Tree
7. Maximum Path Sum
8. MinimunDepth
9. Shortest distance between two nodes in BST
10. Validate Binary Search Tree
11. VerticalOrderTraversal
12. Sum Tree
13. Binary Tree Paths
14. Recover Binary Search Tree
15. LCA of a BST
16. Unique Binary Search Trees
17. Convert Sorted Array to Binary Search Tree
18. Construct Binary Tree from Preorder and Inorder Traversal
19. Boundary Traversal Of Binary Tree

Array

1. Binary Search
2. Jump Game
3. Kth Largest Element
4. Subarray Sum Equals K
5. Subsets
6. Minimum Window Substring
7. Sort Colors
8. Frequencies of array elements in range 1 to n
9. Delete Products
10. K-diff Pairs in an Array
11. Maximum Product Sum Among All Rotations
12. Minimum Swaps To Sort An Array
13. Two Sum
14. Longest Common Prefix
15. Group Anagrams
16. Maximum Subarray
17. Longest Consecutive Sequence
18. Merge Intervals
19. Find Peak Element
20. SmallestPositiveInteger
21. Gas Station
22. 3Sum Smaller
23. Minimum Remove to Make Valid Parentheses
24. Search in Rotated Sorted Array
25. Minimum Subarray With Required Sum
26. Longest Substring Of All Vowels in Order

Cache

1. LRUCache
2. Insert Delete GetRandom in O(1)

Dynamic Programming

1. Partition Equal Subset Sum
2. Maximum Sum Subsequence NonAdjacent
3. Coin Change
4. Climbing Stairs
5. Best Time to Buy and Sell Stock
6. House Robber
7. Edit Distance
8. Longest Increasing Subsequence
9. Longest Common Subsequence

Graph

1. WordLadder

Backtracking

1. Permutations
2. Generate Parentheses

LinkList

1. LinkList
2. Reorder List

Math

1. Count Primes
2. Palindrome Number
3. Power
4. Valid Number
5. Square Root of Number

Matrix

1. Diagonal Traverse
2. Spiral Matrix
3. Set Matrix Zeroes
4. Search a 2D Matrix II
5. Number of Islands
6. Unique Paths

Queue

1. Queue

Stack

1. Valid Parentheses

Sorting

1. QuickSort
2. MergeSort

Heap

1. Heap

Tri

1. Tri