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SCHOOL (2)
BASIC (61)
EASY (308)
MEDIUM (623)
HARD (105)
Reverse alternate nodes in Link List
Rotate a Linked List
Sort a linked list of 0s, 1s and 2s
Add Number Linked Lists
Add 1 to a Linked List Number
Detect Loop in linked list
Quick Sort on Linked List
Sorted insert for circular linked list
QuickSort on Doubly Linked List
Count BST nodes that lie in a given range
Merge Sort
Quick Sort
Binary Tree from Inorder and Postorder
Bottom View of Binary Tree
Intersection in Y Shaped Lists
Diameter of a Binary Tree
Heap Sort
Merge two sorted linked lists
Add all greater values to every node in a BST
Sum Tree
Construct Binary Tree from Parent Array
Connect Nodes of Levels
Flattening a Linked List
Diagonal Tree Traversal
Tree Boundary Traversal
Delete a node from BST
Directed Graph Cycle
Undirected Graph Cycle
LCA in Binary Tree
Maximum difference between node and its ancestor
Range Minimum Query
Absolute List Sorting
Two Stacks in an Array
Binary Heap Operations
Max sum path in two arrays
The Celebrity Problem
Largest subarray with 0 sum
Topological sort
Vertical Tree Traversal
Merge K sorted linked lists
Find the number of islands
Find kth element of spiral matrix
Max sum in the configuration
Get Min from Stack
Serialize and deserialize a binary tree
Gas Station
Wildcard Pattern Matching
Linked List to Binary Tree
Generate IP Addresses
Check if subtree
Extreme nodes in alternate order
Kth element in Matrix
Is Binary Tree Heap
Clone a Binary Tree
Validate an IP Address
Remove loop in Linked List
Dijkstra Algorithm
Minimum Spanning Tree
Largest BST
Interleaved Strings
Count Palindromic Subsequences
Multiply two strings
Minimum Swaps to Sort
Implement Atoi
Palindrome Linked List
Strongly Connected
Rat in a Maze Problem - I
Bipartite Graph
Closest in BST
Pots of Gold Game
Merge two BST 's
Minimum four sum subsequence
Count distinct elements in every window
k-Anagram
Trie | (Delete)
Merge k Sorted Arrays
Root to leaf paths sum
Longest Palindrome in Linked List
Bridge edge in a graph
Find triplets with zero sum
Sort a stack
Duplicate Subtree
Top View of Binary Tree
k-th Smallest in BST
Find Common Nodes in two BSTs
Polynomial Addition
Delete nodes greater than k
Merge Sort for Linked List
Maximum Bipartite Matching
Union of Two Linked Lists
Euler Circuit in an Undirected Graph
Euler circuit and Path
Ancestors in Binary Tree
Pair Sum in BST
Root to Leaf Paths
Complete Binary Tree
Populate Inorder Successor for all nodes
Counting elements in two arrays
Construct expression tree
Linked List that is Sorted Alternatingly
K Sum Paths
Foldable Binary Tree
Leftmost and rightmost nodes of binary tree
Construct Tree from Inorder & Preorder
Arrange Consonants and Vowels
Insert in Sorted way in a Sorted DLL
Isomorphic Trees
Maximum path sum from any node
Predecessor and Successor
Leaves to DLL
Largest Independent Set Problem
Children Sum in a Binary Tree
Diagonal sum in binary tree
Duplicate Subtrees
Construct Tree from Preorder Traversal
Sum of nodes on the longest path
Kth Ancestor in a Tree
ZigZag Tree Traversal
C++ Generic sort
Swap Kth nodes from ends
Add two numbers represented by Linked List
Maximum sum of Non-adjacent nodes
Mother Vertex
Ceil in BST
Count total set bits
Tower Of Hanoi
Smallest Positive Missing
Power Of Numbers
Maximum occured integer
Possible Words From Phone Digits
Rotate and delete
Rearrange Array Alternately
Rearrange an array with O(1) extra space
Maximum Index
Stock buy and sell
Rotate Array
Kadane's Algorithm
Majority Element
Count Inversions
Two Repeated Elements
Unique BST's
Union of 2 Sorted with Duplicates
Indexes of Subarray Sum
Count the number of possible triangles
Triplet Sum in Array
Number of pairs
Merge Without Extra Space
Possible paths between 2 vertices
Level of Nodes
Make Matrix Beautiful
Boolean Matrix
Spirally traversing a matrix
Search in a sorted Matrix
Distance of nearest cell having 1
Unit Area of largest region of 1's
Subarray with 0 sum
Subarrays with equal 1s and 0s
Sort Elements by Decreasing Frequency
Longest Consecutive Subsequence
Case-specific Sorting of Strings
Postfix Evaluation
Stock span problem
Next Greater Element
Infix to Postfix
K Sized Subarray Maximum
Nearly sorted
Activity Selection
Fractional Knapsack
Job Sequencing Problem
Minimum Platforms
Largest number in K swaps
Black and White
Combination Sum
Unique Subsets
M-Coloring Problem
Minimum Jumps
Detect Cycle using DSU
Stickler Thief
Ways to Reach the n'th Stair
Egg Dropping Puzzle
Optimal Strategy For A Game
Sum of all substrings of a number
Longest Increasing Subsequence
Longest Common Subsequence
0 - 1 Knapsack Problem
Lucky Numbers
Number of Unique Paths
Sort according to an Array
Allocate Minimum Pages
Preorder to BST
X Total Shapes
Zero Sum Subarrays
Find whether path exist
Kth Smallest
Implement Trie
Shortest Common Supersequence
Nth Catalan Number
Rotten Oranges
Steps by Knight
Most frequent word in an array of strings
Count subsequences of type a^i, b^j, c^k
Maximize The Cut Segments
Container With Most Water
Print Anagrams Together
Rotate by 90 degree
Top K Frequent in Array
Closest Three Sum
Word Break
Stock Buy and Sell – Multiple Transaction Allowed
Generate Parentheses
Word Search
Word Boggle
Prerequisite Tasks
4 Sum - All Quadruples
Excel Sheet | Part - 1
Sort 0s, 1s and 2s
Paths to reach origin
Complement
Maximum Sub Array
Pascal Triangle
Maximum Index
Sum of Subarrays
Equal Sum
Large Factorial
Maximize Number of 1's
Sum of Middle elements of two sorted arrays
Equivalent Sub-Arrays
Single Among Doubles in a Sorted
Consecutive 1's not allowed
Count of Subarrays
Single Among Doubles
Pythagorean Triplet
Painting the Fence
Pair Sum Closest to 0
Search in Rotated Sorted Array
Smallest factorial number
Sum of bit differences
Count Full Binary Trees
Maximize The Array
Form the Largest Number
Alternate Vowel and Consonant String
Add Binary Strings
Super Primes
Maximum Product Subarray
Longest subarray with sum divisible by K
Row with max 1s
Swapping pairs make sum equal
Column name from a given column number
Substrings with K Distinct
Palindrome SubStrings
Form a palindrome
Nuts and Bolts Problem
Rotate a Matrix
Longest Subarray with Sum K
Transform String
Count the Reversals
Number of positive integral solutions
Cutting Binary String
Sum of two large numbers
Max Sum without Adjacents
Equal 0, 1 and 2
Factorials of large numbers
Reverse each word in a given string
Find the N-th character
Length of the longest substring
Remove leading zeros from an IP address
k largest elements
Sum of XOR of all pairs
Magnet Array Problem
Longest Common Substring
Smallest distinct window
Longest substring with distinct characters
Longest Substring with K Uniques
Longest Palindrome in a String
Product Pair
Integer to Words
K-th element of two Arrays
Arranging the array
String formation from substring
Triplets with Smaller Sum
Rod Cutting
Number of pairs
Smallest Subarray GCD
Minimum swaps and K together
Maximize the sum of selected numbers from a sorted array to make it empty
Smallest Absolute Difference
LCS of three strings
Longest Palindromic Subsequence
First negative in every window of size k
Maximum difference of zeros and ones in binary string
Minimum sum
Build the smallest
Minimize the Heights II
First and Last Occurrences
Reaching the heights
Construct binary palindrome by repeated appending and trimming
Next higher palindromic number using the same set of digits
Smaller on Left
Minimum Deletions
A difference of values and indexes
Maximum Product of Increasing Subsequence of Size 3
Print N-bit binary numbers having more 1s than 0s
Nine Divisors
Valid Substring
Find patterns
Minimum Swaps for Bracket Balancing
Permutations of a String
Previous number in one swap
Friends Pairing Problem
String Subsequence Game
Special Numbers
Pallindrome Patterns
Lexicographically smallest string
Subarrays Product Less than K
Unique Number II
Skip the work
Largest prime factor
Maximum Tip Calculator
Modified Game of Nim
Minimum number of deletions and insertions
Maximize dot product
Max Sum Increasing Subsequence
Coin Change (Count Ways)
Minimum steps to delete a string
String Subsequence
Mobile numeric keypad
Gold Mine Problem
Coin Change (Minimum Coins)
Dice throw
Perfect Sum Problem
Smallest number
Power Of 2 and Subsequences
Kth Smallest Factor
Firing employees
Longest subsequence-1
Power Set
Count ways to N'th Stair(Order does not matter)
Minimum Cost To Make Two Strings Identical
Knapsack with Duplicate Items
nCr
Number of ways
Subsets with XOR value
Geek and its Game of Coins
Maximum path sum in matrix
Special Keyboard
Partition Equal Subset Sum
XOR Game
Longest Bitonic subsequence
Min Coin
Get Minimum Squares
Handshakes
Count possible ways to construct buildings
Count digit groupings of a number
Probability of Knight
Array Pair Sum Divisibility Problem
Magic Triplets
Brain Game
Fill up buckets
Find Last Digit Of a^b for Large Numbers
Matchsticks game
Killing Spree
Subset Sums
Unique partitions
Prime Pair with Target Sum
N Digit numbers with digits in increasing order
Akku and Binary Numbers
Number of paths
Nth Natural Number
Knight Walk
Stepping Numbers
Permutation with Spaces
Choose and Swap
LCM Triplet
Return two prime numbers
Fact Digit Sum
Find Prime numbers in a range
Jumping Numbers
A Game of LCM
Party in Town
Game with String
Two water Jug problem
Grouping Of Numbers
Find the Safe Position
Smith Number
Next Permutation
Missing number in matrix
Smaller on Left
Rotate matrix elements clockwise
Maximum sum of hour glass
Geek and knots
Filling Bucket
How Many X's?
Exit Point in a Matrix
Matrix Exponentiation
Longest Repeating Subsequence
Longest alternating subsequence
Composite and Prime
Finding Profession
Rotate Each Row of Matrix K Times
Decode the string
Preorder Traversal and BST
Total Decoding Messages
Stream First Non-repeating
Maximum Sub-String after at most K changes
Check If two Line segments Intersect
2D Hopscotch
Villain Con
Segregate even and odd nodes in a Linked List
Print leaf nodes from preorder traversal of BST
Number of Rectangles in a Circle
Largest square formed in a matrix
Tricky Subset Problem
Longest Perfect Piece
Rat Maze With Multiple Jumps
Kth Largest in a Stream
Snake and Ladder Problem
Geek and Strings
Pairs of Non Coinciding Points
The Smurfs
Satisfy the equation
7 Segment Display
Product of Primes
Eulerian Path in an Undirected Graph
Transitive closure of a Graph
Replace O's with X's
nCr mod M | Part 2
Two numbers with odd occurrences
Find all distinct subset (or subsequence) sums
Check Mirror in N-ary tree
Queries on Strings
Special Matrix
Queries on a Matrix
Broken blocks
Find the string in grid
Shortest Uncommon Subsequence
Nodes at even distance
Biconnected Graph
Help a Thief!!!
Floyd Warshall
Negative weight cycle
Flood fill Algorithm
Form coils in a matrix
Shortest Source to Destination Path
Base Equivalence
Maximum sum Rectangle
Shortest Path between Cities
Moving on grid
Height Using Parent Array
Reverse Spiral Form of Matrix
Geek and Number String
Save Your Life
Hamiltonian Path
Recursively Remove Adjacent Duplicates
Theft at World Bank
Coins of Geekland
Valid Pair Sum
Transfiguration
Triplets in Sorted Linked List
Restrictive Candy Crush
Help Classmates
Spidey Sense
Escape the Forbidden Forest
Jump Game
Iterative Inorder
Triplets with sum with given range
Preorder traversal (Iterative)
Iterative Postorder
Subset Sum Problem
Longest Palindromic Substring
Form a palindrome
Search Pattern (Z-algorithm)
Search Pattern (Rabin-Karp Algorithm)
Bellman-Ford
Player with max score
Subarrays with sum K
Remove BST keys outside given range
Partition a Linked List around a given value
Minimum XOR value pair
Capacity To Ship Packages Within D Days
Coin Piles
Rearrange characters
Substrings of length k with k-1 distinct elements
Clone a stack without using extra space
Count pairs in array divisible by K
Construct list using given q XOR queries
Number of Provinces
Binary Matrix with at most K 1s
Maximum sum leaf to root path
Find duplicate rows in a binary matrix
Maximum GCD of siblings of a binary tree
Single valued subtree
BST to max heap
BST to greater sum tree
Find rectangle with corners as 1
Shortest Prime Path
Cousins of a given node
Insertion Sort for Singly Linked List
Minimize the Heights I
Subsets
Flatten binary tree to linked list
Rank The Permutations
IPL 2021 - Match Day 2
All Unique Permutations of an array
Course Schedule
Find and Replace in String
Clone an Undirected Graph
Minimum times A has to be repeated such that B is a substring of it
Bitwise AND of the Array
Overlapping Intervals
Find Kth permutation
Maximum number of events that can be attended
Longest Possible Route in a Matrix with Hurdles
Find k-th smallest element in given n ranges
Even Swap
Reverse a Stack
Farthest number
Maximum product subset of an array
Robots
K-th Largest Sum Contiguous Subarray
Hit most Balloons
Maximum Meetings in One Room
Enemy
Max Equal sum of 3 Stacks
Buy Maximum Stocks
Concatenate Equal to Target
Exactly one swap
Maximum Winning score
Compute Before Matrix
Levels Of Game
Smallest sum contiguous subarray
Array Removals
Max Sum without Adjacents 2
Find shortest safe route in a matrix
Minimum Cost to cut a board into squares
Stack Permutations
Largest subtree sum in a tree
Calculate the coefficient
Wine Buying and Selling
Graph is Tree or Not
Replace every element with the least greater element on its right
Geek fight
Special Keyboard 2
Maximum selections
LCP
Next element with greater frequency
Sum of nodes within k distance from target
Minimum increment/decrement to make array non-Increasing
Sort a k sorted doubly linked list
Minimum edges
Minimum Swaps
Construct Binary Tree from String with bracket representation
Check if all levels of two trees are anagrams or not
Number of Distinct Islands
Shortest Distance in a Binary Maze
Minimum Multiplications to reach End
Number Of Enclaves
Eventual Safe States
Alex Travelling
Number Of Islands
Merging Details
Number of Ways to Arrive at Destination
Shortest Path in Undirected Graph
Shortest path in Directed Acyclic Graph
Sum of Beauty of All Substrings
Maximum Consecutive Ones
Asteroid Collision
Minimal Cost
Aggressive Cows
Word Search
Task Scheduler
Hands of Straights
Partitions with Given Difference
Floor in BST
GCD Array
Minimize number of Students to be removed
Maximum Value
Next Greater Element in Circular Array
Carpet into Box
Minimum X (xor) A
Find minimum number of Laptops required
Geeks And The String
Maximum Profit By Choosing A Subset Of Intervals
Minimum repeat to make substring
Paint N House
Max Sum without Adjacents
Intersection Point in Y Shaped Linked Lists
Count number of free cell
Maximum Bipartite Matching
Minimum Days
Prime List
Walls Coloring
Geeks Island
Apple Sequences
Fill the Matrix
Number of Good Components
Optimal Array
Best Node
Update Queries
Good Stones
Shy Geek
Count Cyclic Paths
Maximum Triplet product
Special Palindrome Substrings
Maximum Possible Value
Distinct Difference
Yet another query problem
Geek hates too many 1s
Maximum Length
Remove the balls
Unequal Arrays
Bheem Wants Ladoos
Prefix Suffix String
Smaller Sum
Shortest XY distance in Grid
Nearest smaller tower
Max Coins
Subtree In N-ary Tree
Easy Task
Maximum subset sum
Count Total Setbits
Tree Transformation
Kth common ancestor in BST
Maximum Skill 2
Reverse a linked list
Pairwise swap elements of a linked list
Delete nodes having greater value on right
Remove duplicates from an unsorted linked list
Inorder Traversal
Reverse a Doubly Linked List
Bubble Sort
Selection Sort
Insertion Sort
Check for BST
Right View of Binary Tree
K distance from root
Mirror Tree
Delete without head pointer
Height of Binary Tree
Balanced Tree Check
Kth from End of Linked List
Middle of a Linked List
Check If Circular Linked List
Left View of Binary Tree
Delete Middle of Linked List
Decimal Equivalent of Binary Linked List
Intersection Sorted Linked Lists
Find Transition Point
Queue using two Stacks
Remove Duplicates from a Sorted Linked List
Stack using two queues
Level Order in spiral form
Reverse Level Order Traversal
DFS of Graph
Stack using Linked List
Insert a node in a BST
BFS of graph
Identical Trees
Root to leaf path sum
Square Root
Nodes without a Sibling
Lowest Common Ancestor in a BST
Binary Search
Largest subarray of 0's and 1's
Remove Duplicates Sorted Array
Print all possible strings
Odd even level difference
Binary Tree to BST
Unique rows in boolean matrix
Toeplitz matrix
Remove every k'th node
Third largest element
Convert to Roman No
Multiply two linked lists
Josephus problem
Delete in a Singly Linked List
Kth largest element in BST
Minimum distance in an Array
Array Duplicates
Special Stack
Three way partitioning
Level order traversal
Inorder Successor in BST
Index of an Extra Element
Insert in a Sorted List
Sum of leaf nodes in BST
More than n/k Occurrences
Reverse Using Stack
Symmetric Tree
Next Right Node
Count Pairs whose sum is equal to X
Find length of Loop
Median of BST
Leaf under budget
Find n/k th node in Linked list
Queue Reversal
Reverse first K of a Queue
Brothers From Different Roots
Move all zeros to the front of the linked list
Delete Mid of a Stack
Swap the array elements
Predict the Column
Xoring and Clearing
Find the Frequency
Get min at pop
Frequency Game
First Set Bit
K-th Bit is Set or Not
Longest Consecutive 1's
Power of 2
Wave Array
Frequencies in a Limited Array
Equilibrium Point
Array Leaders
Floor in a Sorted Array
Minimum Number in a sorted rotated array
Print adjacency list
Sum of upper and lower triangles
Print Matrix in snake Pattern
Transpose of Matrix
Rotate by 90 degree
Matrix Boundary Traversal
Anagram
String Rotated by 2 Places
Strings Rotations of Each Other
Isomorphic Strings
Reverse Words
Minimum indexed character
Panagram Checking
Non Repeating Character
Parenthesis Checker
K largest elements
Minimum Cost of ropes
N meetings in one room
Largest number with given sum
Reach a given score
Union-Find
Count number of hops
First Repeating Element
Union of Arrays with Duplicates
Common Elements
Check Equal Arrays
Positive Negative Pair
Missing in Array
Product array puzzle
Roman Number to Integer
Search an element in sorted and rotated array
Intersection of Arrays with Distinct
Max Value Permutation
Missing And Repeating
Non-Repeating Element
Count the elements
Find Kth Rotation
Sort by Set Bit Count
Maximize sum after K negations
Pairs with certain difference
Common in 3 Sorted Arrays
Sorted and Rotated Minimum
Maximum no of 1's row
Sum of elements between k1'th and k2'th smallest elements
Search in a Row-Column sorted matrix
Move All Zeroes to End
String Duplicates Removal
Min sum formed by digits
Minimize the sum of product
Move all negative elements to end
Chocolate Distribution Problem
Count the triplets
Find Pair Given Difference
Swap and Maximize
Bitonic Point
Left most and right most index
Smallest subarray with sum greater than x
Closest Strings
Alternate Positive Negative
Remove Consecutive Characters
Convert a sentence into its equivalent mobile numeric keypad sequence
Rearrange a string
Remove Duplicates
Facing the sun
Second Largest
Convert array into Zig-Zag fashion
Two Sum - Pair with Given Sum
Rotate Bits
Second most repeated string in a sequence
Equal point in a string of brackets
Find all pairs with a given sum
Number of occurrence
Convert an array to reduced form
Check if array is sorted
Sum Pair closest to target
Find missing in second array
Longest Common Prefix of Strings
First Repeated Character
Min Number of Flips
Counts Zeros Xor Pairs
Two sum -Pairs with 0 Sum
Play With OR
Hungry Pizza Lovers
At Least K Occurrences
Element with left side smaller and right side greater
Maximum sum of increasing order elements from n arrays
Count the Zeros
Merge two binary Max heaps
Palindrome String
Maximum average subarray
Search array with adjacent diff at most k
Smallest greater elements in whole array
Fitting The Array
Pattern Searching
Divisible by 7
Balanced string
Shop in Candy Store
Binary representation of next number
Partition a number into two divisible parts
Encrypt the string - 2
Is Binary Number Multiple of 3
Extract the Number from the String
Minimum Operations
Divisibility by 8
Adding Array Elements
Number of 1 Bits
Find the Highest number
Armstrong Numbers
Reverse Bits
Max Sum Subarray of size K
Nth Fibonacci Number
Change Bits
Swap two nibbles in a byte
Copy Set Bits in Range
Count Digits
Party of Couples
Shortest path from 1 to n
Sum 1 to n Divisors
The Bit Game
Swap bits
Minimum number of Coins
Number Of Open Doors
Break a number
Perfect Numbers
Nth item through sum
Smallest number with sum of digits as N and divisible by 10^N
Maximize Toys
Largest number possible
Page Faults in LRU
Trailing zeroes in factorial
Form a number divisible by 3 using array digits
Sum of First N Natural Numbers
Find nth root of m
Juggler Sequence
Tom and Jerry
Arithmetic Number
Surround the 1's
Coverage of all Zeros in a Binary Matrix
Help Ishaan
Trace Path
Inorder Traversal and BST
Sequence Fun
Letters Collection
Help the Old Man!!!
Print Pattern
Primes sum
Print the pattern
Chicks in a Zoo
Maximum Sum LCM
K-Ary Tree
Check if it is possible to convert one string into another with given constraints
Minimum Exchange
Earthquake and the Paint Shop
Count the paths
Array to BST
Sum of dependencies in a graph
Count all possible paths from top left to bottom right
Ball coloring
Rearrange Geek and his Classmates
Modified Numbers and Queries
Fraction Trouble
Sum of k smallest elements in BST
Print Diagonally
Find maximum volume of a cuboid
Gadgets of Doraland
Sum of two numbers without using arithmetic operators
Even and Odd
Search insert position of K in a sorted array
Largest value in each level
Maximum number of 2X2 squares
License Key Formatting
Count the Substrings
Minimize the sum
Find all possible paths from top to bottom
Split the binary string into substrings with equal number of 0s and 1s
Smallest Subset with Greater Sum
Minimum Sum of Absolute Differences of Pairs
Smallest window containing 0, 1 and 2
Move Last Element to Front of a Linked List
Can Make Triangle
Matrix Operations
Find pairs with given sum in doubly linked list
Triangle and Square
Print N to 1 without loop
Print GFG n times
Fibonacci series up to Nth term
Maximum Depth Of Binary Tree
Divisor Game
Parent of Max GCD Siblings in a Binary Tree
Min operations
Last cell in a Matrix
Balloon Everywhere
Reverse both parts
Cutting Rectangles
Frogs and Jumps
Is it Fibonacci
Taxi Booking
Max Level Sum in Binary Tree
Binary matrix having maximum number of 1s
Number of Subarrays of 0's
Maximum Identical Bowls
Bus Conductor
Wifi Range
Minimum Number
Minimum Integer
Seating Arrangement
String Mirror
Binary Modulo
Total Cuts
Bit Magic
Ticket Counter
Level of Node in Tree
Unique Number of Occurrences
Frequency of every Element
Count pairs with given sum
Intersection of Two arrays with Duplicate Elements
Print Linked List
Count Linked List Nodes
Count Leaves in Binary Tree
Postorder Traversal
Implement stack using array
Queue using Linked List
Queue Using Array
Preorder Traversal
First Occurence
Sum Except First and Last
Palindromic Array
Peak element
Linked List Insertion At End
Minimum element in BST
Anagram of String
Identical Linked Lists
Insert in Middle of Linked List
Alternates in an Array
Bit Difference
Print 1 To N Without Loop
Reverse array in groups
Array Search
Sorted Array Search
Binary Array Sorting
Most Frequent Character
Reverse a String
First n Fibonacci
Sum of Natural Numbers
Searching in an Array
Sort The Array
Value equal to index value
Immediate Smaller Element
Count type of Characters
Uncommon characters
Repeated Character
Elements in the Range
Largest Element in Array
Rotate Array by One
Game with nos
Exceptionally odd
Ishaan Loves Chocolates
Array Subset
Rotating an Array
Min and Max in Array
Remove character
GCD of two numbers
1s Complement
Find position of set bit
Set kth bit
LCM And GCD
Median of an Array
Factorial
Binary number to decimal number
Prime Number
Print 1 to n without using loops
Count Squares
Middle of Three
Finding Position
Sorted matrix
Max Min
Geekland Elections
Linked List Group Reverse
Reorder List
Binary Tree to DLL
Min distance between two given nodes of a Binary Tree
Max rectangle
Distinct occurrences
LRU Cache
Box Stacking
AVL Tree Insertion
Partition array to k subsets
Maximum subset XOR
Alien Dictionary
Smallest range in K lists
AVL Tree Deletion
Nodes at given distance in binary tree
Fixing Two nodes of a BST
Max Path Sum 2 Special Nodes
Number of Turns in Binary Tree
String Permutations
Trapping Rain Water
Max Circular Subarray Sum
Smallest window containing all characters of another string
Histogram Max Rectangular Area
Find median in a stream
Solve the Sudoku
Strongly connected component (Tarjans's Algo)
Minimum Cost Path
Median of 2 Sorted Arrays of Different Sizes
Burning Tree
Merge Without Extra Space
Count Pairs in an Array
The Painter's Partition Problem-II
Distinct palindromic substrings
Search Pattern (KMP-Algorithm)
Count Smaller elements
Largest rectangle of 1s with swapping of columns allowed
Longest Prefix Suffix
Wildcard string matching
Circle of strings
Sum-string
Maximum XOR subset
Edit Distance
Minimum Points To Reach Destination
Minimum sum partition
Number Formation
Palindromic Partitioning
Next Happy Number
Stock Buy and Sell – Max K Transactions Allowed
Matrix Chain Multiplication
Median in a row-wise sorted Matrix
Kill Captain America
Boolean Parenthesization
Longest valid Parentheses
Longest Zig-Zag Sub Sequence
Bike Racing
Word Break - 2
N-Queen Problem
Brackets in Matrix Chain Multiplication
Geek collects the balls
nCr mod M | Part 1
Phone directory
Adventure in a Maze
Closest Palindrome
Articulation Point - II
Optimal binary search tree
Assignment Problem
Longest Path in a matrix
Word Wrap
Huffman Encoding
Water Connection Problem
Find the Maximum Flow
Corona Vaccine
Longest substring to form a Palindrome
Minimum X (xor) A
Find all Critical Connections in the Graph
Word Break (Trie)
Sorted Linked List to BST
Palindrome Pairs
Array Partition
Count occurrences of a given word in a 2-d array
Number of distinct words with K maximum contiguous vowels
Reverse a sublist of a linked list
Shortest Unique prefix for every word
Find number of closed islands
Shortest Path by Removing K walls
Articulation Point - I
Kth Smallest Number in Multiplication Table
Stock Buy and Sell – Max 2 Transactions Allowed
Min Chars to Add for Palindrome
Number of pairs
Largest rectangular sub-matrix whose sum is 0
Minimum time to fulfil all orders
Geek in a Maze
Maximum Connected group
MaxSkill
Minimize Max Distance to Gas Station
Better String
Select Nodes
Largest Sum Cycle
Fixing Two swapped nodes of a BST
Avoid Explosion
Walls Coloring II
Max min Height
Median of the Subarrays
Minimum BST Sum Subtree
Search in a 2D Matrix
Arrays (Sum of array)
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