- Most Important DBMS Questions + Video Crash Course (InterviewBit)
- SQL Syntax Ref
- Commonly Asked Questions 1 (GFG)
- Commonly Asked Questions 2 (GFG)
- SQL Problems (Leetcode)
- How to draw ER Diagram (YT)
- Sanchit Jain Complete Playlist (YT)
- Must Do Problems on Topic Wise (GFG)
- Must Do Problems on Topic Wise (Practice) (GFG)
- Complete DSA Roadmap (InterviewBit)
- Abdul Bari Standard DSA Playlist (YT)
- Leetcode Problems
- Subarray with given sum
- Count the triplets
- Kadane’s Algorithm
- Missing number in array
- Merge two sorted arrays
- Rearrange array alternatively
- Number of pairs
- Inversion of Array
- Sort an array of 0s, 1s and 2s
- Equilibrium point
- Leaders in an array
- Minimum Platforms
- Reverse array in groups
- K’th smallest element
- Trapping Rain Water
- Pythagorean Triplet
- Chocolate Distribution Problem
- Stock buy and sell
- Element with left side smaller and right side greater
- Convert array into Zig-Zag fashion
- Last Index of 1
- Spirally traversing a matrix
- Largest Number formed from an Array
- Reverse words in a given string
- Permutations of a given string
- Longest Palindrome in a String
- Recursively remove all adjacent duplicates
- Check if string is rotated by two places
- Roman Number to Integer
- Anagram
- Remove Duplicates
- Form a Palindrome
- Longest Distinct Characters in the string
- Implement Atoi
- Implement strstr
- Longest Common Prefix
- Find the element that appears once in sorted array
- Search in a Rotated Array
- Binary Search
- Sum of Middle Elements of two sorted arrays
- Quick Sort
- Merge Sort
- K-th element of two sorted Arrays
- N-Queen Problem
- Solve the Sudoku
- Rat in a Maze Problem
- Word Boggle
- Generate IP Addresses
- Find first set bit
- Rightmost different bit
- Check whether K-th bit is set or not
- Toggle bits given range
- Set kth bit
- Power of 2
- Bit Difference
- Rotate Bits
- Swap all odd and even bits
- Count total set bits
- Longest Consecutive 1’s
- Sparse Number
- Alone in a couple
- Maximum subset XOR
- Finding middle element in a linked list
- Reverse a linked list
- Rotate a Linked List
- Reverse a Linked List in groups of given size
- Intersection point in Y shaped linked lists
- Detect Loop in linked list
- Remove loop in Linked List
- n’th node from end of linked list
- Flattening a Linked List
- Merge two sorted linked lists
- Intersection point of two Linked Lists
- Pairwise swap of a linked list
- Add two numbers represented by linked lists
- Check if Linked List is Palindrome
- Implement Queue using Linked List
- Implement Stack using Linked List
- Given a linked list of 0s, 1s and 2s, sort it
- Delete without head pointer
- Parenthesis Checker
- Next larger element
- Queue using two Stacks
- Stack using two queues
- Get minimum element from stack
- LRU Cache
- Circular tour
- First non-repeating character in a stream
- Rotten Oranges
- Maximum of all subarrays of size k
- Print Left View of Binary Tree
- Check for BST
- Print Bottom View of Binary Tree
- Print a Binary Tree in Vertical Order
- Level order traversal in spiral form
- Connect Nodes at Same Level
- Lowest Common Ancestor in a BST
- Convert a given Binary Tree to Doubly Linked List
- Write Code to Determine if Two Trees are Identical or Not
- Given a binary tree, check whether it is a mirror of itself
- Height of Binary Tree
- Maximum Path Sum
- Diameter of a Binary Tree
- Number of leaf nodes
- Check if given Binary Tree is Height Balanced or Not
- Serialize and Deserialize a Binary Tree
- Find median in a stream
- Heap Sort
- Operations on Binary Min Heap
- Rearrange characters
- Kth largest element in a stream
- Merge K sorted linked lists
- Kth largest element in a stream
- Flood fill Algorithm
- Number of paths
- Combination Sum – Part 2
- Special Keyboard
- Josephus problem
- Relative Sorting
- Sorting Elements of an Array by Frequency
- Largest subarray with 0 sum
- Common elements
- Find all four sum numbers
- Swapping pairs make sum equal
- Count distinct elements in every window
- Array Pair Sum Divisibility Problem
- Longest consecutive subsequence
- Array Subset of another array
- Find all pairs with a given sum
- Find first repeated character
- Zero Sum Subarrays
- Minimum indexed character
- Check if two arrays are equal or not
- Uncommon characters
- Smallest window in a string containing all the characters of another string
- First element to occur k times
- Check if frequencies can be equal
- Depth First Traversal
- Breadth First Traversal
- Detect cycle in undirected graph
- Detect cycle in a directed graph
- Topological sort
- Find the number of islands
- Implementing Dijkstra
- Minimum Swaps
- Strongly Connected Components
- Shortest Source to Destination Path
- Find whether path exist
- Minimum Cost Path
- Circle of Strings
- Floyd Warshall
- Alien Dictionary
- Snake and Ladder Problem
- Activity Selection
- N meetings in one room
- Coin Piles
- Maximize Toys
- Page Faults in LRU
- Largest number possible
- Minimize the heights
- Minimize the sum of product
- Huffman Decoding
- Minimum Spanning Tree
- Shop in Candy Store
- Geek collects the balls
- Minimum Operations
- Max length chain
- Minimum number of Coins
- Longest Common Substring
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 – 1 Knapsack Problem
- Maximum sum increasing subsequence
- Minimum number of jumps
- Edit Distance
- Coin Change Problem
- Subset Sum Problem
- Box Stacking
- Rod Cutting
- Path in Matrix
- Minimum sum partition
- Count number of ways to cover a distance
- Egg Dropping Puzzle
- Optimal Strategy for a Game
- Shortest Common Supersequence
Source - GFG
- Arrays
- Linked lists
- Stacks
- Queues
- Binary Trees & Binary search Trees
- Self-balancing Trees (AVL Trees, Red-Black Trees, Splay Trees)
- Heaps
- Tries
- Maps & Hash Tables
- Graphs
- Segment Trees
- Fenwick Trees
- Disjoint Set Union
- Minimum Spanning Trees
- Divide and Conquer
- Sorting Algorithms (Bubble Sort, Counting Sort, Quick Sort, Merge Sort, Radix Sort)
- Searching Algorithms (Linear Search, Binary Search)
- Sieve of Eratosthenes
- Knuth-Morris-Pratt Algorithm
- Greedy I (Maximum number of non-overlapping intervals on an axis)
- Greedy II (Fractional Knapsack Problem)
- Dynamic Programming I (0–1 Knapsack Problem)
- Dynamic Programming II (Longest Common Subsequence)
- Dynamic Programming III (Longest Increasing Subsequence)
- Convex Hull
- Graph Traversals (Breadth-First Search, Depth-First Search)
- Floyd-Warshall / Roy-Floyd Algorithm
- Dijkstra's Algorithm & Bellman-Ford Algorithm
- Topological Sorting