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- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Max rectangle
- Subtraction in Linked List
- Distinct occurrences
- LRU Cache
- Box Stacking
- Points in Straight Line
- AVL Tree Insertion
- Partition array to k subsets
- Maximum subset XOR
- Longest Palindromic Substring in Linear Time
- Alien Dictionary
- Smallest range in K lists
- AVL Tree Deletion
- Merge Sort on Doubly Linked List
- 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
- Trapping Rain Water
- Max Circular Subarray Sum
- Smallest window containing all characters of another string
- Histogram Max Rectangular Area
- Max of min for every window size
- 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
- Next Smallest Palindrome
- Count Pairs in an Array
- The Painter's Partition Problem-II
- Distinct palindromic substrings
- Ugly Numbers
- Count Smaller elements
- Largest rectangle of 1s with swapping of columns allowed
- Longest Prefix Suffix
- Minimum number to make median X
- Circle of strings
- Longest repeating and non-overlapping substring
- Head to Tail ordering
- Sum-string
- Similar expressions
- Maximum XOR subset
- Edit Distance
- Minimum number of elements
- Minimum Points To Reach Destination
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Strictly Increasing Array
- Bit Difference
- Median in a row-wise sorted Matrix
- Kill Captain America
- Generalised Fibonacci numbers
- 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
- Convex Hull
- Phone directory
- Adventure in a Maze
- Closest Palindrome
- Optimal binary search tree
- Find the pattern
- Travelling Salesman Problem
- Longest Path in a matrix
- Word Wrap
- Create your own Calculator
- Huffman Encoding
- Longest Even Length Substring
- Rank of Matrix
- Sorting Elements of an Array by Frequency
- 7 Segment Display
- Rearrange characters
- Nearly Sorted Algorithm
- Last two digits of Fibonacci
- Mike and Photographic Memory
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Rearrange a linked list
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Linked List in Zig-Zag fashion
- Detect Loop in linked list
- Quick Sort on Linked List
- Insert in Sorted 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
- Reverse alternate levels of a perfect binary tree
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Maximum difference between node and its ancestor
- Absolute List Sorting
- Two Stacks in an Array
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Merge K sorted linked lists
- Find the number of islands
- 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
- Additive sequence
- Largest BST
- Interleaved Strings
- Sum of permutations
- Sorted subsequence of size 3
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze Problem - I
- Bipartite Graph
- Max sum subarray by removing at most one element
- Number of root to leaf paths
- Closest in BST
- BST with Dead End
- Pots of Gold Game
- Delete keys in a Linked list
- Merge two BST 's
- Count distinct elements in every window
- Merge k Sorted Arrays
- Root to leaf paths sum
- Longest Palindrome in Linked List
- Print Nodes having K leaves
- Find triplets with zero sum
- Sort a stack
- Duplicate Subtree
- Find the missing no in string
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Polynomial Addition
- Delete nodes greater than k
- Merge Sort for Linked List
- Union of Two Linked Lists
- Euler Circuit in an Undirected Graph
- Euler circuit and Path
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- Occurences of 2 as a digit
- 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
- Modify Linked List-1
- Construct Tree from Inorder & Preorder
- Construct tree from Inorder and LevelOrder
- Count the nodes at distance K from leaf
- Vertical sum
- Mirror of a given node
- Pairs violating BST property
- 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
- Diagonal sum in binary tree
- Deletion and Reverse in Circular Linked List
- Normal BST to Balanced BST
- Right Sibling in Binary Tree
- Duplicate Subtrees
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Construct a Full Binary Tree
- Convert Level Order Traversal to BST
- ZigZag Tree Traversal
- Count Number of SubTrees having given Sum
- Vertical Width of a Binary Tree
- Path Count in Directed Graph
- C++ Friend function
- C++ Generic sort
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Count total set bits
- Smallest Positive Missing
- Power Of Numbers
- Possible Words From Phone Digits
- Rotate and delete
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Stock buy and sell
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Unique BST's
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Possible paths between 2 vertices
- Boolean Matrix
- Spirally traversing a matrix
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Subarray range with given 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
- Kth smallest element
- Activity Selection
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- Black and White
- Combination Sum
- Unique Subsets
- M-Coloring Problem
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Minimum number of jumps
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Equal Sum Partition
- Sort according to an Array
- Allocate Minimum Pages
- Preorder to BST
- X Total Shapes
- Zero Sum Subarrays
- Find whether path exist
- 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
- Overlapping Intervals
- Word Break
- Word Boggle
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Paths to reach origin
- Taking 1 out of 3 consecutives
- Complement
- Maximum Sub Array
- Maximum Index
- Flip Bits
- Sum of Subarrays
- Equal Sum
- Top k numbers in a stream
- Longest Span in two Binary Arrays
- Sum of Middle elements of two sorted arrays
- Single Among Doubles in a Sorted
- Consecutive 1's not allowed
- Count Occurences of Anagrams
- Count of Subarrays
- Single Among Doubles
- Pythagorean Triplet
- Pair Sum Closest to 0
- Search in Rotated Sorted Array
- Sum of bit differences
- Find Marks from Ranks
- Print Binary Tree levels in sorted order
- Count Full Binary Trees
- Maximum Intervals Overlap
- Minimums in Array
- Maximize The Array
- Max absolute difference
- Max Score from Subarray Mins
- Form the Largest Number
- Marks of PCM
- Water Collection
- Add Binary Strings
- Super Primes
- Subarray Sum Divisible By K
- Remove minimum elements
- Longest subarray with sum divisible by K
- Sort the given array after applying the given equation
- Row with max 1s
- Swapping pairs make sum equal
- Check if frequencies can be equal
- Column name from a given column number
- Concatenation of Zig-Zag String in n Rows
- Design a tiny URL or URL shortener
- Substrings with K Distinct
- Count of Palindromic substrings in an Index range
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Rotate a Matrix
- Numbers with one absolute difference
- Longest Subarray with Sum K
- count special palindromic
- Sum of two large numbers
- Max Sum without Adjacents
- Beautiful SubSequence
- Factorials of large numbers
- Maximum length Bitonic Subarray
- Shuffle integers
- Reverse each word in a given string
- Find the N-th character
- Length of the longest substring
- Remove leading zeros from an IP address
- The Tiny Miny
- Maximum Sum Path in Two Arrays
- k largest elements
- Sum of XOR of all pairs
- Magnet Array Problem
- Longest Common Substring
- Smallest distinct window
- Longest common substring value of two numbers
- Longest substring with distinct characters
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Look and Say Pattern
- Minimum steps to get desired array
- Pass the semester
- Cut rope to maximise product
- Product Pair
- Tic Tac Toe
- Integer to Words
- String Conversion
- K-th element of two Arrays
- Arranging the array
- String formation from substring
- Longest Arithmetic Subsequence
- Triplets with Smaller Sum
- Rod Cutting
- Greater tower sum
- K closest elements
- Number of pairs
- Fill array with 1's
- Smallest Subarray GCD
- Missing element of AP
- Minimum swaps and K together
- Maximize the sum of selected numbers from a sorted array to make it empty
- Smallest Absolute Difference
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Longest Common Increasing Subsequence
- First negative in every window of size k
- Find k-th character in string
- Minimum sum
- Not a subset sum
- Build the smallest
- Minimize the Heights II
- Large Factorials
- Transform to prime
- First and Last Occurrences
- Construct binary palindrome by repeated appending and trimming
- Next higher number in one swap
- Palindrome in Alphanumeric String
- Next higher palindromic number using the same set of digits
- Smaller on Left
- A difference of values and indexes
- Print N-bit binary numbers having more 1s than 0s
- Nine Divisors
- Permutations of a String
- Number following a pattern
- Subsequence matching
- Find largest word in dictionary
- Rotate String
- Friends Pairing Problem
- String Subsequence Game
- Special Numbers
- CamelCase Pattern Matching
- Count divisors of product of array elements
- Maximum Sum Subsequence of length k
- Combination Sum - Part 2
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Maximum bitonic subarray sum
- Max possible amount
- Maximum calorie
- Modular Exponentiation for large numbers
- Game of XOR
- Largest prime factor
- Maximum Tip Calculator
- Minimum number of deletions and insertions
- Maximize dot product
- Max Sum Increasing Subsequence
- Minimum cost to fill given weight in a bag
- Distinct Transformations
- Coin Change (Count Ways)
- Sequence of Sequence
- Count numbers with given sum
- Mobile numeric keypad
- Modify array to maximize sum of adjacent differences
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Palindromic Strings
- Perfect Sum Problem
- Smallest number
- Dyck Path
- Kth Smallest Factor
- Firing employees
- Shreyansh and his bits
- Longest subsequence-1
- Find the largest number
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Minimum Cost To Make Two Strings Identical
- Subset with sum divisible by k
- Knapsack with Duplicate Items
- Numbers with 0 as a digit
- nCr
- Number of ways
- Count Integral Points
- Count of sum of consecutives
- Subsets with XOR value
- Maximum path sum in matrix
- Minimum steps to destination
- Special Keyboard
- Min Coin
- Get Minimum Squares
- Maximum GCD Pair
- Lucky alive person in a circle
- Handshakes
- Count possible ways to construct buildings
- Count distinct pairs with difference k
- Count digit groupings of a number
- Jumbled Strings
- Dimensions of Rectangle
- Probability of Knight
- Array Pair Sum Divisibility Problem
- Digit multiplier
- Magic Triplets
- Prime Pair with Target Sum
- N Digit numbers with digits in increasing order
- Count Numbers in Range
- Fill the Tank
- Number of paths
- Sisters and coins
- Knight Walk
- Stepping Numbers
- Permutation with Spaces
- Path of greater than equal to k length
- Coins and Game
- Number of paths in a matrix with k coins
- Card Rotation
- Choose and Swap
- Find the last digit when factorial of A divides factorial of B
- Pasha and Primes
- Return two prime numbers
- Sum of Query II
- Find Prime numbers in a range
- Power of Largest Prime
- Count Divisors of Factorial
- Prime Factors and their Powers
- Jumping Numbers
- A Game of LCM
- Count in array
- Party in Town
- Game with String
- Two water Jug problem
- Count even length
- Fraction to Repeating Decimal
- Numbers with alternative 1's
- Find the Safe Position
- Smith Number
- Count of AP Subsequences
- Next Permutation
- Rank The Permutations
- Prime factorization and geek number
- Smaller on Left
- Nitika and her queries
- How Many X's?
- Exit Point in a Matrix
- Matrix Exponentiation
- Longest Repeating Subsequence
- Composite and Prime
- Finding Profession
- Rotate Each Row of Matrix K Times
- Decode the string
- Is Sudoku Valid
- Preorder Traversal and BST
- Total Decoding Messages
- Stream First Non-repeating
- Count Divisors
- Mathematical manipulation
- Check If two Line segments Intersect
- Buying Vegetables
- Possible paths
- Segregate even and odd nodes in a Linked List
- Print leaf nodes from preorder traversal of BST
- Largest square formed in a matrix
- Pizza Mania
- Pyramid form
- Water Overflow
- Rat Maze With Multiple Jumps
- Kth Largest in a Stream
- Easy Query
- Snake and Ladder Problem
- Geek and Strings
- Pairs of Non Coinciding Points
- Eulerian Path in an Undirected Graph
- Transitive closure of a Graph
- Replace O's with X's
- Mail System Design
- Cost of Sweets
- Lots of Work
- Check Mirror in N-ary tree
- Your Social Network
- Queries on Strings
- Special Matrix
- Express as sum of power of natural numbers
- Number of Palindromic paths in a Matrix
- Nodes at even distance
- The Infinite String
- Reverse Delete Algorithm for Minimum Spanning Tree
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Form coils in a matrix
- Largest subsquare surrounded by X
- Shortest Source to Destination Path
- Divisibility tree
- Maximum sum Rectangle
- Save Your Life
- Image Multiplication
- Hamiltonian Path
- Recursively Remove Adjacent Duplicates
- Rotate Array
- Sort String
- Print Linked List
- Count Linked List Nodes
- Power of Four
- Size of Binary Tree
- Count Leaves in Binary Tree
- Postorder Traversal
- Implement stack using array
- Queue using Linked List
- Queue Using Array
- Doubly linked list Insertion at given position
- Add two fractions
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Preorder Traversal
- First Occurence
- Sum Except First and Last
- C++ STL | Set 4 (stack)
- C++ STL | Set 5 (queue)
- Search a node in BST
- Equal Sum and XOR
- Remainder with 7
- Palindromic Array
- Peak element
- Linked List Insertion At End
- Minimum element in BST
- Circular Linked List Traversal
- Is Linked List Length Even?
- Identical Linked Lists
- Modular Node
- Triplet Family
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'
- Pairwise Consecutive Elements
- Count Non-Leaf Nodes in Tree
- Mrs. S- JAVA Bits Set 1
- C++ Call by reference
- Java Interface
- Java Generic Class
- Java Collections | Set 9 (Queue)
- Start Coding
- The Size of
- Logical Operators
- Count Odd and Even
- Sort and Reverse Vector
- Front to Back
- Stack designer
- Queue Push & Pop
- Parties and seats
- Set Operations
- Sum Array Puzzle
- Start coding - C
- The new line - C
- Input/Output - C
- Comments in C
- Operators in C
- Logical operator in C
- Increment and decrement - C
- getchar and putchar - C
- Format specifier - C
- Bit Difference
- Number is sparse or not
- Reverse array in groups
- Array Search
- Binary Array Sorting
- Check if a string is Isogram or not
- Binary String
- Most Frequent Character
- Remove common characters and concatenate
- Sum of numbers in string
- Keypad typing
- First n Fibonacci
- Find second largest element
- Count number of elements between two given elements in array
- Sum of Array
- Searching in an Array
- Doubling the value
- Ishaan's Internship
- Type of array
- Sort a String
- Anagram Palindrome
- Sort The Array
- Distinct Elements in a Stream
- Alternative Sorting
- Remove all characters other than alphabets
- Maximum product of two numbers
- Value equal to index value
- Check for subsequence
- Confused pappu
- Segregate Even and Odd numbers
- Odd to Even
- Encrypt the string - 1
- Fighting the darkness
- The problem of identical arrays
- Immediate Smaller Element
- Sum of distinct elements
- Count the characters
- Uncommon characters
- Quick Left Rotation
- Rock Paper Scissors!
- Shortest direction
- Stable Sort and Position
- Duck Number
- Remove repeated digits in a given number
- Repeated Character
- Replace the Bit
- First 1 in a Sorted Binary Array
- Find the Number which contain the digit d
- The Penalty Shootout
- Elements in the Range
- Last index of One
- Making elements distinct
- URLify a given string
- Floating point number even or odd
- First K natural numbers
- Sort the string in descending order
- Merge two strings
- Countries at war
- Last duplicate element in a sorted array
- Rotate Array by One
- Exceptionally odd
- Ishaan Loves Chocolates
- Jay's Apples
- Array Subset
- Rotating an Array
- Product is even or odd?
- Remove Duplicates from unsorted array
- Minimum number to form the sum even
- First and Second Smallests
- Min and Max in Array
- Multiply left and right array sum
- Average Count Array
- Positive and negative elements
- Extract Maximum
- Smallest number repeating K times
- Boolean String Value
- Last index of a character in the string
- Good or Bad string
- Perfect Square String
- Minimize string value
- Remove character
- Maximum Integer Value
- Betting game
- Triangle growing downwards
- Factors Sum
- GCD of Array
- Check set bits
- Check for Power
- Find position of set bit
- Odd Divisors
- Change all even bits in a number to 0
- Numbers having alternate bits
- XOR Count Zero and One
- Find the fine
- Strong Numbers
- Count digits in given number N which divide N
- Nth Even Fibonacci Number
- LCM And GCD
- House Robber
- Longest Increasing Subarray
- Shortest un-ordered subarray
- Check perfect square
- Numbers having two adjacent set bits
- Sort first half in ascending and second half in descending
- Sum Of Digits
- Factorial Number
- Factorial
- Parity of unsigned integer
- Simple Interest
- Special Odd Series Sum
- Special Series Sum
- Difference series
- Finger Game
- Prime Number
- Absolute Difference of 1
- Closest Number
- Find The Sequence
- Angle between hour and minute hand
- Count zero
- Check if the door is open or closed
- Find sum of even factors of a number
- Jumpy Ball
- Ways To Tile A Floor
- Remainder Evaluation
- Count Squares
- Maximum distance
- Middle of Three
- Difference between sums of odd and even digits
- Sum of Digit Modified
- Sum of Digits Divisibility
- Number of unique rectangles
- Print the Kth Digit
- Numbers containing 0's from 1 to N
- Height of Heap
- The Modulo Task
- Repetitive Addition Of Digits
- Half N by M
- Pairs of prime number
- Weird Number
- Perfect Squares in a Range
- Sum Terms Nth Row
- Geek's Weight
- Make a Distinct Digit Array
- Minimum difference pair
- Roots of Quadratic Equation
- Thief trying to escape
- Finding Position
- Squares in a Matrix
- Sums of i-th row and i-th column
- 2's Complement
- Sum of primes
- Check if given four points form a square
- Squares Difference
- Pattern-1
- Repeated Sum and then Multiply
- Student record
- Replace by X
- String Ignorance
- Reverse a linked list
- Frequency in a Linked List
- Delete N nodes after M nodes of a linked list
- Pairwise swap elements of a linked list
- Node at a given index in linked list
- Linked list of strings forms a palindrome
- Compare two linked lists
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Delete in a Doubly 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
- Two Mirror Trees
- Maximum Width of 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
- Transform to Sum Tree
- 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
- BFS of graph
- Identical Trees
- Square Root
- Nodes without a Sibling
- Lowest Common Ancestor in a BST
- Binary Search
- Run Length Encoding
- Largest subarray of 0's and 1's
- Level Order Line by Line
- BST Keys in a Range
- Minimum Depth of a Binary Tree
- Remove duplicates in array
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Equilibrium index of an array
- Unique rows in boolean matrix
- Remove every k'th node
- Convert to Roman No
- Multiply two linked lists
- Josephus problem
- You and your books
- Expression Tree
- Max distance between same elements
- Longest Consecutive Subsequence
- Count Occurrence of digit k
- Generate Grey Code Sequences
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Max Level Sum in Binary Tree
- Special Stack
- Three way partitioning
- Longest consecutive sequence in Binary tree
- Level order traversal
- Inorder Successor in BST
- Index of an Extra Element
- Operating an array
- Convert Ternary Expression to Binary Tree
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Sum of leaf nodes in BST
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- Reverse Using Stack
- Full Binary Tree
- Symmetric Tree
- Delete Alternate Nodes
- Merge Lists Alternatingly
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Find length of Loop
- Find n/k th node in Linked list
- Linked List Matrix
- Maximum Pairwise Computed Value
- Queue Reversal
- Reverse first K of a Queue
- Remove Half Nodes
- Height of Spiral Tree
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Nodes at Odd Levels
- Closest Neighbour in BST
- Brothers From Different Roots
- Exchange the Leaf Nodes
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Move all zeros to the front of the linked list
- Delete Mid of a Stack
- Rotate doubly Linked List
- Product of an Array
- C++ Template
- The New Line
- Data Types
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- Bitwise Operators
- Even Odd
- For Loop- primeCheck
- While loop- printTable
- Learning Macros
- Step by Step Condition
- Start Coding - Java
- The New Line - Java
- Data Types - Java
- Taking input - Java
- Learn to Comment - Java
- nextLine and next
- Precise Format - Java
- logical Operators - Java
- Bitwise Operators - Java
- Even Odd - Java
- For Loop- primeCheck - Java
- While loop- printTable - Java
- Step by Step Condition - Java
- Swap the array elements
- Even Subsets - Java
- Consonants and Vowels check - Java
- Predict the Column - Java
- Swap values using References
- Swap the objects
- Structs and Objects
- Learning Structs
- BigInteger Multiply
- BigInteger mod
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Get min at pop
- Deque Implementations
- Min Heap implementation
- Frequency Game
- Multimap Operations
- Pair Sum Existence- Revisited
- First Set Bit
- Rightmost different bit
- K-th Bit is Set or Not
- Power of 2
- Swap all odd and even bits
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Minimum Number in a sorted rotated array
- Sort by Absolute Difference
- Print adjacency list
- Print Matrix in snake Pattern
- Transpose of Matrix
- Rotate by 90 degree
- Anagram
- Winner of an election
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Isomorphic Strings
- The Modified String
- Reverse Words
- Minimum indexed character
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Generate Binary Numbers
- Minimum Cost of ropes
- N meetings in one room
- Count ways to N'th Stair
- Count number of hops
- First Repeating Element
- Union of Arrays with Duplicates
- Reach a given score
- Check Equal Arrays
- Numbers containing 1, 2 and 3
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Intersection of Arrays with Distinct
- Excel Sheet | Part - 2
- Adding One
- Missing And Repeating
- Buildings receiving sunlight
- Non-Repeating Element
- Pairs of equals Sum
- Max value
- Count the elements
- Maximum Gap
- Find Kth Rotation
- Find the closest number
- Professor and Parties
- Pairs with certain difference
- Common in 3 Sorted Arrays
- Good Pairs
- Sorted and Rotated Minimum
- Maximum no of 1's row
- Next greater number set digits
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- String Duplicates Removal
- Min sum formed by digits
- Missing number
- Move all negative elements to end
- String Manipulation
- Chocolate Distribution Problem
- Minimum Distinct Ids
- Count pairs Sum in matrices
- Count the triplets
- Find Pair Given Difference
- Part Sort
- Pairs with difference k
- Finding Number
- Drive the car
- Swap and Maximize
- Bitonic Point
- Bird and maximum fruit gathering
- Left most and right most index
- Smallest subarray with sum greater than x
- Amend The Sentence
- Single Number
- Even Greater than Odd
- Alternate Positive Negative
- Check if actual binary representation of a number is palindrome
- 1[0]1 Pattern Count
- Remaining String
- Check if a given string is a rotation of a palindrome
- Remove Consecutive Characters
- Common Subsequence
- Convert a sentence into its equivalent mobile numeric keypad sequence
- Remove b and ac from a given string
- Kth distance
- Addition of submatrix
- Sort in specific order
- Rearrange a string
- Form largest number from digits
- Arya's Long String
- Remove Duplicates
- Same characters in two strings
- Nearest multiple of 10
- Reorganize The Array
- Facing the sun
- Greater on right side
- Jumping Caterpillars
- Count Substrings
- Difficulty of sentence
- Twice Counter
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Second most repeated string in a sequence
- Check if array contains contiguous integers
- Sort Unsorted Subarray
- Find all pairs with a given sum
- Number of occurrence
- Maximum repeating number
- Race in Fooland
- Divisible by 8
- Does array represent Heap
- Longest common prefix
- The Non-repetitive String
- Convert an array to reduced form
- Count even substrings
- Find missing in second array
- String's Count
- Longest Common Prefix of Strings
- Largest Fibonacci Subsequence
- First Repeated Character
- Prime String
- Even and odd elements at even and odd positions
- String comparison
- Sum of distinct elements for a limited range
- Substrings with same first and last characters
- Two sum -Pairs with 0 Sum
- Sum of f(a[i], a[j]) over all pairs in an array of n integers
- Segregate 0s and 1s
- Positive distinct count
- Large number division
- Print an array in Pendulum Arrangement
- Three Great Candidates
- Digits in a set
- At Least K Occurrences
- Element with left side smaller and right side greater
- Ishaan and Sticks
- Find the closest pair from two arrays
- The Inverting Factor
- LCS with permutations
- Merging two unsorted arrays in sorted order
- Count the Zeros
- Transform the array
- The Counting Game !!
- Sum of Lengths of Non-Overlapping SubArrays
- Program for length of the longest word in a sentence
- Four Elements
- Missing ranges of numbers
- Total count
- Search array with adjacent diff at most k
- The Optimal Selection
- Delete Array Elements
- Unique DigitSum
- Chocolate Station
- Smallest greater elements in whole array
- Fitting The Array
- Pangram Strings
- K-th missing element
- Pair with given sum in a sorted array
- Pattern Searching
- Count number of words
- Print Bracket Number
- Easy string
- Does robot moves circular
- Shop in Candy Store
- Sort string
- Decode It
- Odd Even Problem
- Generate binary string
- Partition a number into two divisible parts
- Is Binary Number Multiple of 3
- Padovan Sequence
- Cross character
- Karatsuba Algorithm
- Extract the Number from the String
- Days of Our Lives
- Minimum Operations
- Divisibility by 8
- Number of 1 Bits
- Find the Highest number
- Check if a Integer is power of 8 or not
- AND operation
- Love For The Twins
- K Smallests in the Original Order
- Lucky Number
- Pairs with Positive Negative values
- Reverse Bits
- Semi Prime
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Swap two nibbles in a byte
- Copy Set Bits in Range
- Star elements
- Maximum weight difference
- Toggle bits in the given range
- Negation sum
- Element that appears once where every element occurs twice
- Product of Prime Factors
- Maximum Sum Problem
- High Effort vs Low Effort
- Count numbers
- Shortest path from 1 to n
- Count binary strings
- Make Number Odd
- Minimum steps to minimize n as per given condition
- Sieve of Eratosthenes
- Count numbers containing 4
- Exponentiation (Set 2)
- Assign Mice Holes
- Faithful Numbers
- Swap bits
- Arrange the Balls
- Happy Number
- Reach the Nth point
- Nearest Perfect Square
- Minimum number of Coins
- Number Of Open Doors
- Number of Groups
- Perfect Numbers
- Pair cube count
- Nth item through sum
- Palindrome numbers
- Maximum height of the staircase
- Day of the week
- Even Fibonacci Numbers Sum
- Next in Series
- Adjacents are not allowed
- Maximize Toys
- C++ Exception Handling
- Largest number possible
- Page Faults in LRU
- Carry counter
- Penalty Shooters
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Deficient Number
- Trailing zeroes in factorial
- Number of ways to find two numbers
- Number of subsets and mean
- Sum of all prime numbers between 1 and n
- Series GP
- Total number of Strings
- Product of two digit numbers
- Number of 1's in smallest repunits
- Euler Totient
- Triangular Number
- Sum of First N Natural Numbers
- Right angled triangles
- Subarray with least average
- Find nth root of m
- Sixy Primes
- Largest Product Pallindrome
- Summing the Sum
- Is Square
- Sphenic Number
- Find n-th Fortunate Number
- Maximum Diamonds
- The Light Problem
- Rotate a Matrix by 180 Counterclockwise
- Row with Minimum 1s
- Geek and his Tricky Series
- Boundary Elements of Matrix
- Geeky Year
- Prime number of set bits
- Multiply two polynomials
- Inorder Traversal and BST
- Value of polynomial
- Largest zigzag sequence
- Overlapping rectangles
- Inverted triangle of stars
- Print Pattern
- Y shaped pattern
- Primes sum
- K-Ary Tree
- Binary Tree K level sum
- Crazy Equations
- Count the paths
- Array to BST
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Shortest distance in infinite tree
- Sum of k smallest elements in BST
- Matrix Game - 1
- Print Diagonally
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