Visualize the Data Structures and Algorithms https://visualgo.net/en/list

Data Structures

• Array
• HashTable
• Linked List
  • Singly Linked List
  • Doubly Linked List
• Stack
  • Using Linked List
  • Using Array
• Queue
  • Using Linked List
  • Using Stack
• Binary Search Tree (BST)
• Min Heap

Algorithms

• TwoPairsSum in a array
• Reverse a string
• First Recurring Character
• Reverse a Singly Linked List (refer singly linked list above on DS file)
• Merge Sorted Array
• Merge Two Sorted Linked List
• Check if a singly linked list is a palindrome
• Reverse a string in place (input given in a array of characters)
• Stack Min (Stack DS with getting minimum value of the stack in constant time O(1))
• Permutations with Duplicates
• Search in a Binary Search Tree
• Valid Anagram
• Get Decimal value from Binary Linked List
• No. of ways to climb stairs with 2 steps
• Find the fibonacci sequence
• Best time to buy and sell stock
• Group Anagrams
• Reverse digits of a 32-bit integer
• Remove Linked List Elements
• Remove Elements from an Array in place
• Move Zeroes to the end of the array
• Check if Linked List has a cycle
• Detect start of the cycle in Linked List
• Find Binary Search Tree (BST) Successor Search
• Defanging an IP Address
• Reverse vowels of the string
• Check if a BST is height balanced
• Determine if binary search tree (BST) is valid
• Decode Ways
• Search in Rotated Sorted Array
• 3Sum
• Maximum contiguous subarray sum
• Monotonic Array
• Keyboard Row
• InOrder Binary Tree Traversal (recursive approach)
• InOrder Binary Tree Traversal (iterative approach)
• PreOrder Binary Tree Traversal (recursive)
• PreOrder Binary Tree Traversal (iterative)
• PostOrder Binary Tree Traversal (recursive)
• Post Order Binary Tree Traversal (iterative approach using one stack) -- Read more here https://leetcode.com/problems/binary-tree-postorder-traversal/discuss/45648/three-ways-of-iterative-postorder-traversing-easy-explanation
• Missing Number in a array of positive intergers
• 136 - Single Number
• 136 Single Number (linear time and constant space) using XoR approach
• 104 Maximum Depth of Binary Tree
• 111 Minimum Depth of Binary Tree (recursive approach)
• 111 Minimum Depth of Binary Tree (level order traversal BFS approach)
• 2 Add Two Numbers
• 3 Longest Substring Without Repeating Characters
• 771 Jewels and Stones
• 230 Kth Smallest Element in a BST
• 709 To Lower case
• 938 Range Sum of BST
• 1480 Running Sum of 1d Array
• 627 Swap salary
• 1431 Kids With the Greatest Number of Candies
• 804 Unique Morse Code Words
• 1704 Determine if String Halves Are Alike
• 876 Middle of the Linked List
• 1281 Subtract the Product and Sum of Digits of an Integer
• 1470 Shuffle the Array
• 461 Hamming Distance
• 1342 Number of Steps to Reduce a Number to Zero
• 1313 Decompress Run-Length Encoded List
• 1221 Split a String in Balanced Strings
• 1365 How Many Numbers Are Smaller Than the Current Number
• 596 Classes More Than 5 Students
• 728 Self Dividing Numbers
• 1512 Number of Good Pairs
• 832 Flipping an Image
• 1179 Reformat Department Table
• 1672 Richest Customer Wealth
• 680 Valid Palindrome II
• 31 Next Permutation
• 20 - Valid Parantheses
• 15 - 3Sum
• 938 - range sum BST
• 199 - Binary Tree Right Side View
• 22 - Generate parantheses
• 173 - Binary Search Tree Iterator
• 543 - Diameter of Binary Tree
• 297 - Serialize and Seserialize BST
• 124 - binary tree maximum path sum
• 953 - verifying an Alien Dictionary
• 785 - is Graph Bipartite?
• 523 - Continuous Subarray Sum
• 560 - subarray sum equals K
• 121 - Best Time to Buy and Sell Stock
• 10 - Regular expression matching
• 215 - Kth Largest Element in an array
• 494 - Target Sum
• 510 - Inorder successor in BST II
• 583 - Delete Operation for Two Strings
• 1428 - LeftMost Column with at Least a One
• 973 - K Closest points to Origin
• 415 - Add Strings
• 349 - Intersection of Two Arrays
• 253 - Meeting Rooms II
• 138 - copy list with random pointer
• 143 - Reorder List
• 232 - Implement Queue using Two Stacks
• 112 - Path Sum
• 1197 - Minimum Knight Moves
• 142 - Linked List Cycle II
• 322 - Coin Change
• 56 - Merge Intervals
• 426 - Convert Binary Search Tree to Sorted Linked List
• 1143 - Longest Common Subsequence
• Time Planner (pramp)o
• 252 - Meeting Rooms
• 986 - Interval List Intersections
• 1249 - Minimum Remove to Make Valid Parantheses
• 1570 - Dot Product of Two Sparse Vectors
• 67 - Add Binary strings
• 208 - Implement Trie (Prefix Tree)
• 127 - Word Ladder
• 273 - Integer to English Words
• 301 - Remove Invalid Parentheses
• 18 - 4Sum
• pramp - Smallest Substring of all Characters
• 350 - Intersection of Two Array II
• 721 - Accounts Merge
• 270 Closest Binary Search Tree Value
• 269 Alien Dictionary
• 236 Lowest Common Ancestor of a Binary Tree
• 235 Lowest Common Ancestor of a Binary Search Tree
• 65 Valid Number
• 528 Random Pick with Weight
• 987 Vertical Order Traversal of a Binary Tree
• 636 Exclusive Time of Functions
• pramp Drone Flight Planner
• 29 Divide Two Integers
• 621 Task Scheduler
• 1333 Filter Restaurants by Vegan-Friendly, Price and Distance
• 1436 Destination City
• 355 Design Twitter
• 347 Top K Frequent Elements
• 692 Top K Frequent words
• 599 Minimum Index Sum of Two Lists
• 332 Reconstruct Itinerary
• 784 Letter Case Permutation
• 1455 Check if a word occurs as a prefix of any word in a sentense