- Search an Element in an array
- Binary String
- Consecutive elements
- GCD of Array
- Repetitive Addition Of Digits
- Searching a number
- Power of 2
- Sort The Array
- Pythagorean Triplet
- Sort a String
- Doubling the value
- Majority Element
- Shortest path from 1 to n
- Amend The Sentence
- Rotate Array
- Permutations of a given string
- Missing number in array
- Rock Paper Scissors!
- Array of alternate +ve and -ve no.s
- Swap two nibbles in a byte
- Maximum product of two numbers
- Number of paths
- Count total set bits
- Bit Difference
- Count numbers containing 4
- Greater on right side
- Immediate Smaller Element
- Sum of distinct elements
- Intersection of two arrays
- Union of two arrays
- Convert array into Zig-Zag fashion
- Remove character
- Number of occurrence
- Maximum repeating number
- k largest elements
- Student record
- Minimum difference pair
- Check if a number is power of another number
- Sum of all prime numbers between 1 and N.
- Maximum money
- Palindromic Subsequences
- Ways To Tile A Floor
- Absolute distinct count
- Middle of Three
- Generate Binary Numbers
- Shortest direction
- Smallest number
- Count the numbers
- Find the Odd Occurence
- Keypad typing
- Maximum Possible Sum of Products
- Rotating an Array
- Total distance travelled in an array
- Total count
- Surpasser Count
- Matching Pair
- Sum of primes
- Merge and Sort
- Minimize string value
- Reverse array in groups
- The OR Gate
- Multiple in Table Tennis
- Set Bits
- Subset Sums
- Professor and Parties
- Longest Consecutive 1's
- Max-Min conversion
- Count Sorted Rows
- Padovan Sequence
- Unusual String Sort
- Minimize the sum of product
- Missing number
- Make a Distinct Digit Array
- Reverse each word in a given string
- Check if a number can be expressed as x^y
- Permutations in array
- String with numbers at its end
- Interesting Patterns
- Starting Point
- Help a Thief!!!
- Encrypt the string - 1
- Squares in a Matrix
- King's War
- Check squares
- Find duplicates under given constraints
- Find first and last occurrence of x
- Type of array
- Ladoo problem
- Sum of dependencies in a graph
- Stuffs Division
- Sort in specific order
- Check if two arrays are equal or not
- Form largest number from digits
- Sherlock a Detective
- Check if string is rotated by two places
- Unique Numbers
- Maximum sum of hour glass
- Learning Output
- Substrings with similar first and last characters
- Find first set bit
- Minimize sum of alternate product
- Check for subsequence
- Check if the door is open or closed
- Find first repeated character
- Sort the fest
- Count even substrings
- Magical Number
- Message decoding
- Geek and Coffee Shop
- A guy with a mental problem
- Check if divisible by 5
- Wrong Ball
- Magical String[Duplicate Problem]
- Index of first 1 in a sorted array of 0’s and 1’s
- Strong Numbers
- Does array represent Heap
- Find the element that appears once in sorted array
- Thief trying to escape
- Last index of One
- Arranging the array
- Cyclically rotate an array by one
- Print an array in Pendulum Arrangement
- Transpose of Matrix
- First element to occur k times
- Check whether K-th bit is set or not
- Length of Last word
- Extract Maximum
- Remove Duplicates from unsorted array
- Uncommon characters
- Minimum sum of two elements from two arrays
- Sum of numbers in string
- Find the smallest and second smallest element in an array
- Find minimum and maximum element in an array
- URLify a given string
- Reverse a string with spaces intact
- Find Smallest Missing in Sorted
- Wildcard string matching
- Sorted matrix
- Minimum move to front operations
- Sum Terms Nth Row
- Balance with respect to an array
- Pair array product sum
- Pair cube count
- Equivalent Sub-Arrays
- Count pair sum
- First Come First Serve
- K-th distinct element
- Friendly Array
- Balanced Array
- Max Odd Sum
- Swap and Maximize
- Max Sum Subarray of size K
- Minimum Difference among K
- Check if a string is Isogram or not
- Longest Equal Prefix
- Check Arithmetic Progression
- Sort the Half Sorted
- Fibonacci in the array
- Alternative Sorting
- Rightmost different bit
- Max value after m range operation
- Check set bits
- Fighting the darkness
- Sorting Employees
- Count Pairs Odd Xor
- Make a Palindrome
- Quick Left Rotation
- Difficulty of sentence
- Stable Sort and Position
- Twice counter
- Shuffle integers
- Longest Common Prefix in an Array
- Elements in the Range
- First K natural numbers
- Print first n Fibonacci Numbers
- Remove repeated digits in a given number
- Sum of distinct elements for a limited range
- Count triplets with sum smaller than X
- Linear Diophantine Equations
- Check perfect square
- Odd to Even
- Minimum Distinct Ids
- Find the Highest number
- Print Matrix in snake Pattern
- Anagram Palindrome
- Transform to prime
- First and last occurrences of X
- Positive and negative elements
- Boolean String Value
- Rearrange the array
- Part Sort
- Ceil The Floor
- Sort first half in ascending and second half in descending
- Tough Competitors
- Anshuman's Favourite Number
- The Counting Game !!
- XOR Count Zero and One
- Absolute Difference of 1
- Remove common characters and concatenate
- Shortest un-ordered subarray
- Swapping Triangles
- Longest increasing subarray
- Sums of i-th row and i-th column
- Repeated I.Ds
- Sum of Digit Modified
- Count the characters
- Find k-th character in string
- Good or Bad string
- Repeated Character
- Merge two strings
- Find the position
- Red OR Green
- Sort String
- Difference between highest and lowest occurrence
- Minimum product pair
- Find unique element
- G.F Series
- Find the fine
- Maximize ∑arr[i]*i of an Array
- One's Complement
- Sort the string in descending order
- Find N-th term in the series
- Sum of Digits Prime/Non-Prime
- Count number of elements between two given elements in array
- Weak Maths
- Stuti and her Problem
- Perfect Array
- Find the closest number
- Sandwiched_Vowels
- Last index of a character in the string
- Distinct Elements in a Stream
- Make Co-prime Array
- Special Series Sum
- Check for three consecutive numbers
- Special Odd Series Sum
- Maximum triplet sum in array
- Print K smallest elements in their original order
- Check whether two numbers differ at one bit position only
- Floating point number even or odd
- Find X and Y in Linear Equation
- Squares Difference
- Modulus of two double numbers
- Semi Prime
- Factors Sum
- Check if the number is balanced
- Count the characters in each word in a given sentence
- Find sum of even factors of a number
- The problem of identical arrays
- Extract the phone number
- The Remaining Cake
- Tiger Zinda Hai
- Product is even or odd?
- Remove consonants from a string
- Earthquake and the Paint Shop
- Sum of fifth powers of the first n natural numbers
- Check if actual binary representation of a number is palindrome
- Trimorphic Number
- C++ Corresponding position in the two strings that hold exactly the same characters.
- Product of maximum in first array and minimum in second
- Palindrome in both Decimal and Binary
- Most frequent word in an array of strings
- Check if strings are rotations of each other or not
- Sophie Germain Prime
- Crazy String
- Set all odd bits
- Message Spreading
- Convert the string
- Is digital root of N a prime?
- Making elements distinct
- The amazing number
- Countries at war
- Jumpy Ball
- Sum of all sub-sequences of a number
- Last duplicate element in a sorted array
- Perfect Square String
- Sum of f(a[i], a[j]) over all pairs in an array of n integers
- Inverse Permutation
- Game with nos
- Play With OR
- Why is Melody so chocolaty?
- Tywin's War Strategy
- Pattern-1
- Ishaan's Internship
- Ishaan Loves Chocolates
- Ishaan's Weight
- Dull Jack
- Jay's Apples
- Lottery Money
- Program for length of the longest word in a sentence
- String of Commons
- The Modulo Task
- Riya's Test
- The Penalty Shootout
- Number Series
- GOT TV series
- The Number System
- Confused pappu
- Difference series
- Reducing Walls
- Multiply left and right array sum.
- Find the Number which contain the digit d
- Maximum Perimeter of Triangle from array
- Doctors Clinic
- How Many X's?
- Prime String
- Find The Sequence
- Height of Heap
- Fibonacci to N
- Average Count Array
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Power of Four
- Delete node in Doubly Linked List
- Size of Binary Tree
- Inorder Traversal
- Bubble Sort
- Count Leaves in Binary Tree
- Selection Sort
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Square root
- Insert a node in Doubly linked list
- Binary Search
- Remove duplicate elements from sorted Array
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Third largest element
- Preorder Traversal
- Implement strstr
- C++ STL | Set 1 (vector)
- C++ STL | Set 5 (queue)
- Search a node in BST
- Implement Atoi
- Find Number of Numbers
- Minimum distance between two numbers
- Find triplets with zero sum
- Operating an array
- Linked List Insertion
- Play with an array
- Minimum element in BST
- Anagram of String
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Delete Alternate Nodes
- Identical Linked Lists
- Find the Sum of Last N nodes of the Linked List
- Modular Node
- Find n/k th node in Linked list
- Maximum in Struct Array
- Queue Reversal
- Triplet Family
- Sum of Binary Tree
- Magical Number
- Insert in Middle of Linked List
- longest substring containing '1'
- Pairwise Consecutive Elements
- Count Non-Leaf Nodes in Tree
- C++ STL List
- Product of array elements
- logical Operators
- Front to Back
- Stack designer
- Queue Designer
- Map Operations
- Sum Array Puzzle

Name

marco bonizzi

Institute

Tea sistemi spa

Overall Coding Score: 2628

Monthly Coding Score: 359

Weekly Coding Score: 42

- Frequencies of Limited Range Array Elements
- Anagram
- Number of Unique Paths
- Wave Array
- Maximum Gap
- Pattern Searching
- Print Pattern
- Rotation
- Search in a Rotated Array
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Palindrome numbers
- Subarray with least average
- Magic Number
- Maximize Toys
- Trailing zeroes in factorial
- Maximize Number of 1's
- Non Repeating Character
- a^b(Set 2)
- Minimum number of Coins
- Count Odd Factors
- Distinct Substrings
- Sum of Middle Elements of two sorted arrays
- Good Pairs
- First Repeating Element
- Count Occurences of Anagrams
- Reverse words in a given string
- Isomorphic Strings
- Count Substrings
- Check if a given string is a rotation of a palindrome
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Activity Selection
- Remove “b” and “ac” from a given string
- Equal Sum and Product
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Pairs with difference k
- Two numbers with sum closest to zero
- Finding Number
- Maximum value in a bitonic array
- Next greater number set digits
- Finding Position
- Next sparse binary number
- Amount of Water
- Single Number
- Segregate even and odd nodes in a Linked List
- Does robot moves circular
- Count increasing Subarrays
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Count distinct pairs with difference k
- Replace by X
- Is Square
- Column name from a given column number
- Maximum Product Subarray
- N meetings in one room
- Remove Duplicates
- Kth distance
- Addition of submatrix
- Maximum sum increasing subsequence
- Array to BST
- Facing the sun
- Triangular Number
- Max Sum without Adjacents
- Key Pair
- Inversion of array
- Maximum Difference
- Add Binary Strings
- Product array puzzle
- Multiply two polynomals
- Reverse Bits
- Count Smaller elements
- Lucky Number
- Reach the Nth point
- Subarray with given sum
- Adjacents are not allowed
- Count numbers
- Leaders in an array
- Swap all odd and even bits
- Count number of hops
- Equal to product
- Count pairs with given sum
- Inorder Traversal and BST
- Where Am I ?
- Mapped String
- Cutting Rectangles
- Filling Bucket
- Segregate 0s and 1s
- Copy Set Bits in Range
- Triplet Sum in Array
- Three Great Candidates
- Reach a given score
- Next in Series
- Inverted triangle of stars
- Possible paths
- Minimum element in a sorted and rotated array
- Search in a matrix
- Number Of Open Doors
- Chinky and diamonds
- Shop in Candy Store
- Check If two Line segments Intersect
- Largest number possible
- Sub-Array Pairs
- Generate binary string
- Missing element of AP
- Count the Zeros
- Distinct absolute array elements
- 0 - 1 Knapsack Problem
- Longest Common Increasing Subsequence
- Find the number of sub-arrays having even sum
- Skip the work
- Pallindrome Patterns
- Valid Substring
- Count the Reversals
- Tom and Jerry
- Last Match
- Next Prime Palindrome
- Extract the Number from the String
- Cutted Segments
- Smallest number subset
- Minimum number of swaps needed
- Maximum average subarray
- Game of Death in a circle
- Help Mommy out
- Power of Numbers
- Next larger element
- Permutation divisibility
- Arithmetic Number
- Left out candies
- Perfect Numbers
- Ordering of strings
- Count number of substrings
- Crack the series
- Raju and coins
- Largest number with given sum
- Non Fibonacci Number
- Collection of pens
- Product of two digit numbers
- Permutation with Spaces
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- Finding Profession
- Max value
- Flip Bits
- Finding the numbers
- 3 Divisors
- Minimum Energy
- Count Increasing Subsequences
- Least Prime Factor
- Left or Right Positioned Array
- Max and Min Products
- LCS with permutations
- Choose and Swap
- Equal 0, 1 and 2
- Adding Ones
- Min Number of Flips
- Kaprekar Number
- Keith Number
- Pairs with specific difference
- Deficient Number
- Circle and Lattice Points
- Largest Even Number
- Count Pairs in an Array
- Min sum formed by digits
- Min Subsets with Consecutive Numbers
- Move all negative elements to end
- String Manipulation
- Minimum Steps
- Coverage of all Zeros in a Binary Matrix
- Chocolate Distribution Problem
- Binary Tree K level sum
- Exit Point in a Matrix
- Maximum Sum Bitonic Subsequence
- 1[0]1 Pattern Count
- Sum of k smallest elements in BST
- Find sum of divisors
- Reverse Coding
- Flood fill Algorithm
- Tom and String
- Pair with greatest product in array
- Encrypt the string - 2
- Kth Prime factor of a Number
- Decode the pattern
- Longest K unique characters substring
- Largest Product Pallindrome
- Maximum no of 1's row
- Drive the car
- Friends Pairing Problem
- Max sum in sub-arrays
- Next Greater Even Number
- Gold Mine Problem
- Smallest subarray with sum greater than x
- Odd Game
- Rahul a Geek
- Game of XOR
- Find Nth root of M
- Find largest word in dictionary
- Trace Path
- Love For The Twins
- Sum of all substrings of a number
- Recaman’s sequence
- Minimum Operations
- Equal point in a string of brackets
- Find all pairs with a given sum
- Check if frequencies can be equal
- Shortest distance in infinite tree
- Palindromic patitioning
- Meta Strings
- Numbers with same first and last digit
- Check if palindromic ignoring spaces
- Matrix Game - 1
- Excel Sheet | Part - 2
- Smallest window in a string containing all the characters of another string
- Largest Fibonacci Subsequence
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- Fractional Knapsack
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Maximum difference Indexes
- Common elements
- Recursive sequence
- Rod Cutting
- Efficiently sorting numbers in range from 0 to n^2 - 1
- Element with left side smaller and right side greater
- ADA Noise
- Element in a Series
- Transitive closure of a Graph
- Array Subset of another array
- Karatsuba Algorithm
- Divisible by 5 or not-1
- Count the paths
- First negative integer in every window of size k
- Length of longest subarray
- Sum of product of all pairs
- N-divisors
- Four Elements
- Find the highest occurring digit in prime numbers in a range
- Paths to reach origin
- Subarray with 0 sum
- Get Minimum Squares
- Subarray range with given sum
- Count number of words
- Group Anagrams Together
- Number of divisors in a given range
- Find the closest prime number to a given number
- Sum equals to Sum
- Count the elements
- Second most repeated string in a sequence
- Reverse vowels in a given string
- Count all possible paths from top left to bottom right
- Minimum Deletions
- Shortest Common Supersequence
- Sort the given array after applying the given equation
- k sorted array
- Assign Mice Holes
- Greedy Fox
- Nth number made of prime digits
- Large number division
- Happiest Triplet
- Find pairs with given relation
- Mr Modulo and Pairs
- Painting the Fence
- Rearrange a string
- Minimum Number in a sorted rotated array
- Find distinct elements
- Largest Permutation
- Sum of length
- Sort by Absolute Difference
- Bird and maximum fruit gathering
- Primes sum
- Fibonacci Expression
- Swapping pairs make sum equal
- Toppers Of Class
- String Ignorance
- Minimum steps to minimize n as per given condition
- Minimum number of deletions.
- Jumping Caterpillars
- Closest Strings
- Longest alternating subsequence
- Bitonic Generator Sort
- Subset with sum divisible by m
- Count of strings that can be formed using a, b and c under given constraints
- Nth item through sum
- Longest subsequence-1
- Maximum sum Problem
- String comparison
- Minimum indexed character
- Find number of times a string occurs as a subsequence
- Minimum Cost To Make Two Strings Identical
- Find minimum adjustment cost of an array
- High-effort vs. Low-effort
- Stickler Thief
- Remaining String
- Minimum Swaps for Bracket Balancing
- Even and odd elements at even and odd positions
- Find the most frequent digit
- Maximum number of zeroes
- Merging two unsorted arrays in sorted order
- Transform the array
- Even Fibonacci Numbers Sum
- Sum of Lengths of Non-Overlapping SubArrays
- Equalize the Towers
- Maximum possible sum
- Emirp numbers
- Chocolate Station
- Common Subsequence
- Right angled triangles
- Boundary Elements of Matrix
- Maximum sum difference
- Count the triplets
- Sub-arrays with equal number of occurences
- Star elements
- Completing tasks
- Sort the way !
- Special Numbers
- Sum of two large numbers
- Find the minimum time
- Prime number of set bits
- Pairs with Positive Negative values
- Sequence Fun
- Numbers containing 1, 2 and 3
- Maximum Volume of a Rectangular Box
- Mean of range in array
- Number of subarrays whose minimum and maximum are same
- Pairs with Difference less than K
- Find k-th missing element
- Ana and Sweets
- Woodall Number
- Incomplete Array
- Sum Indexes
- GeeksforGeeks New System
- Beautiful Sequence
- Geek and his Tricky Series
- Maximum number of characters between any two same character
- Cumulative frequency of count of each element in an unsorted array
- Winner of an election
- Close to Perfection
- Next Happy Number
- Summed Matrix
- Morning Assembly
- Missing Intervals
- Fact Digit Sum
- Non-Repeating Element
- Last seen array element
- Find if string is K-Palindrome or not
- Closing bracket index
- Number of pairs with maximum sum
- Longest common prefix
- Roof Top
- Pairs which are Divisible by 4
- Maximum AND Value
- Split the Array
- Count unset bits in a given Range
- Rearrange array such that even positioned are greater than odd
- Find winner of the Game of Nim
- Smallest subarray with all occurrences of a most frequent element
- Sum of all divisors from 1 to n
- Maximum distinct elements after removing K elements
- Maximum difference of zeros and ones in binary string
- Arya and The Great War
- Mystic Falls School
- Find out the Team
- Swap the closest and farthest digits
- Nearest multiple of 10
- Remove leading zeros from an IP address
- Reorganize The Array
- The invariable units digit
- Word with maximum frequency
- Form a number divisible by 3 using array digits
- Check if array contains contiguous integers with duplicates allowed
- Rearrange an array such that arr[i] = i
- Maximum height of the staircase
- Winner of an election
- C++ Visible Numbers
- Rope Cutting
- Villain Con
- Multiply by 11
- Amicable Pair
- Print this pattern!
- Count ways to express N as the sum of 1,3 and 4
- Numbers with prime frequencies greater than or equal to k
- Cross the hurdles: The Game
- Counts Zeros Xor Pairs
- String Modification
- Easy string
- Count pairs Sum in matrices
- Print Binary Tree levels in sorted order
- Convert a sentence into its equivalent mobile numeric keypad sequence
- Check if a number is divisible by 8
- XOR of two numbers after making length of their binary representations equal
- Hungry Pizza Lovers
- Arya's Long String
- Ishaan and Sticks
- Mysterious Series
- Akaash's Assignment
- Find the closest pair from two arrays
- Common Divisor
- English Words
- Minimum Swaps required to group all 1’s together
- The Inverting Factor
- Print all bitwise subsets of a number N
- Maximum sum of increasing order elements from n arrays
- The Non-repetitive String
- Longest substring with equal number of 0s and 1s
- Holi Balloons
- Charul and vessels
- Print Bracket Number
- Maximum number of partitions that can be sorted individually to make sorted
- Check if it is possible to survive on Island
- Surround the 1's
- The Buggy Robot
- Searching in an array where adjacent differ by at most k
- Cutting Binary String
- The Even Array
- Shoot, Reload, Repeat
- Palindromic Series
- The Light Problem
- The Modified String
- Days of Our Lives
- The Optimal Selection
- Check if any valid sequence is divisible by M
- Minimum changes to make all substrings distinct
- Ishaan's Birthday
- Sorting all array elements except one
- Candy Packets
- Smallest number with sum of digits as N and divisible by 10^N
- Reaching the heights
- Delete array elements which are smaller than next or become smaller
- Divisor Product
- Lucky Ishaan
- Smallest greater elements in whole array
- Eulerian Path in an Undirected Graph
- Minimal moves to form a string
- Connell Sequence
- Save Ironman
- Fitting The Array
- Are you "Perfect"
- K-th missing element
- Print adjacency list
- Pair with given sum in a sorted array
- Reverse a linked list
- Occurence of an integer in a Linked List
- Delete N nodes after M nodes of a linked list
- Rotate a Linked List
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Rearrange a linked list
- Add 1 to a number represented as linked list
- linked list of strings forms a palindrome
- Compare two linked lists
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Rearrange linked list in-place
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Split a Circular Linked List into two halves
- Reverse a Doubly Linked List
- Insertion Sort
- Merge Sort
- Quick Sort
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- Diameter of Binary Tree
- Check for Balanced Tree
- N
^{th}node from end of linked list - Left View of Binary Tree
- Delete Middle of Linked List
- Merge two sorted linked lists
- Sum Tree
- Decimal Equivalent of Binary Linked List
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- Find Transition Point
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Reverse alternate levels of a perfect binary tree
- Insert a node in a BST
- BFS of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Print all nodes that don't have sibling
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Max sum path in two arrays
- Run Length Encoding
- Largest subarray of 0's and 1's
- Level order traversal Line by Line
- Print BST elements in given range
- Largest subarray with 0 sum
- Minimum Depth of a Binary Tree
- Remove duplicates in small prime array
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Max sum in the configuration
- Get minimum element from stack
- Equilibrium index of an array
- Unique rows in boolean matrix
- Remove every k'th node
- Leaf at same level
- Is Binary Tree Heap
- Match specific pattern
- Validate an IP Address
- Find Maximum value
- Distinct occurrences
- C++ STL | Set 2 (pair)
- Sorted subsequence of size 3
- Sum of subset differences
- Josephus problem
- You and your books
- Expression Tree
- Points in Straight Line
- Maximum Difference
- Check if Linked List is Palindrome
- Max distance between same elements
- Print matrix in diagonal pattern
- Longest Consecutive Subsequence
- Repetition of k length substring
- Check whether BST contains Dead End
- Delete a Node in Single Linked List
- Kth largest element in BST
- Find duplicates in an array
- Count distinct elements in every window
- Check if two strings are k-anagrams or not
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Three way partitioning
- Sort a stack
- Longest consecutive sequence in Binary tree
- Print Common Nodes in BST
- Level order traversal
- Peak element
- Inorder Successor in BST
- Delete nodes greater than k
- Index Of an Extra Element
- Sum of given range
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Split Singly Linked List Alternatingly
- Ancestors in Binary Tree
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Root to Leaf Paths
- Maximum path sum
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- Counting elements in two arrays
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- XOR of a given range
- Full binary tree
- Modify Linked List-1
- Triplet with 0 sum in BST
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Merge Lists Alternatingly
- Arrange Consonants and Vowels
- Huffman Decoding
- Vertical sum
- Next Right Node
- Count Pairs whose sum is equal to X
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Depth of node
- pth common ancestor in BST
- Predecessor and Successor
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Deletion and Reverse in Linked List
- Change of Key in BST
- Median of BST
- Normal BST to Balanced BST
- Leaf under budget
- Linked List Matrix
- Reverse First K elements of Queue
- Remove Half Nodes
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Nodes at Odd Levels
- Closest Neighbor in BST
- Brothers From Different Roots
- Sum of the Longest Bloodline of a Tree
- Exchange the Leaf Nodes
- Kth Ancestor in a Tree
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Sum of Leaf Nodes at Min Level
- C++ STL Priority Queue
- Tilt of Binary Tree
- Move all zeros to the front of the linked list
- Delete middle element of a stack
- Vertical Width of a Binary Tree
- Rotate doubly Linked List by P nodes
- The Size of
- Learn to Comment
- GetLine and Ignore
- Learning Macros
- Count Odd Even
- Need Some Change
- Count the Specials
- Matrix Interchange
- Predict the Column
- Xoring and Clearing
- Consonants and Vowels check
- Even Subsets
- Almost Equal
- The Pattern Matcher
- Magic in CPP
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Student of the Year
- Get min at pop
- Deque Implementations

- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Sum Of Prime
- Excel Sheet | Part - 1
- Maximum Sub Array
- Print Diagonally
- Overlapping Intervals
- Maximum Index
- Equal Sum
- Next Permutation
- Longest Increasing Subsequence
- Parenthesis Checker
- Longest Common Subsequence
- Minimum number of jumps
- Count ways to reach the n'th stair
- Count ways to N'th Stair(Order does not matter)
- Edit Distance
- nCr
- Maximum Rectangular Area in a Histogram
- Longest Span with same Sum in two Binary arrays
- Min Coin
- Consecutive 1's not allowed
- Count of Subarrays
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- String formation from substring
- Case-specific Sorting of Strings
- Sum of bit differences
- Subset Sum Problem
- Number of Coins
- Find Prime numbers in a range
- Stock buy and sell
- Largest Number formed from an Array
- Number of paths in a matrix with k coins
- Possible words from Phone digits
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Relative Sorting
- Black and White
- Maximum of all subarrays of size k
- Largest square formed in a matrix
- Row with max 1s
- Boolean Matrix Problem
- Sorting Elements of an Array by Frequency
- Design a tiny URL or URL shortener
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Special Keyboard
- Number of ways
- Minimum Cost of ropes
- Sum of Query II
- Form a palindrome
- Maximum length Bitonic Subarray
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Stock span problem
- Convert an array to reduced form
- Minimum steps to get desired array
- Subsequence matching
- Palindromic Array
- Betting game
- Is Binary Number Multiple of 3
- Possible groups
- Preorder Traversal and BST
- Bleak Numbers
- Circle of strings
- Nodes at even distance
- Minimize the heights
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Check if a string is repetition of its substring of k-length
- Rotate and delete
- Snake and Ladder Problem
- Recursively remove all adjacent duplicates
- Shortest Source to Destination Path
- Number of Palindromic paths in a Matrix
- Trie | (Insert and Search)
- Replace O's with X's
- Knight Walk
- Find all four sum numbers
- Word Boggle
- Form coils in a matrix
- Print leaf nodes from preorder traversal of BST
- Distance of nearest cell having 1
- Find whether path exist
- Largest prime factor
- Check Mirror in N-ary tree
- Unit Area of largest region of 1's
- Rearrange characters
- Express as sum of power of natural numbers
- First non-repeating character in a stream
- Kth Smallest Factor
- Count subsequences of type a^i b^j c^k
- Stepping Numbers
- K
^{th}largest element in a stream - Water Overflow
- Zero Sum Subarrays
- Floyd Warshall
- Nearly Sorted Algorithm
- Geek collects the balls
- Largest Sum Subarray of Size at least K
- Smallest Positive missing number
- Longest Bitonic subsequence
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Perfect Sum Problem
- Array Pair Sum Divisibility Problem
- First Digit
- Top k numbers in a stream
- Firing employees
- Rotten Oranges
- Prime factorization and geek number
- Sisters and coins
- Probability of Knight
- LCS of three strings
- Minimum cost to fill given weight in a bag
- Count even length
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- In First But Second
- Smith Number
- Row with minimum number of 1's
- Maximum bitonic subarray sum
- Maximum Tip Calculator
- Alternate Vowel and Consonant String
- Pizza Mania
- Killing Spree
- Count of Palindromic substrings in an Index range
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Make Matrix Beautiful
- Letters Collection
- Sum of XOR of all pairs
- String Conversion
- Geek and Strings
- Container with most water
- Save Gotham!
- The Painter's Partition Problem
- Maximize the sum of selected numbers from an array to make it empty
- Smaller on Left
- Given a linked list, reverse alternate nodes and append at the end
- Reverse a Linked List in groups of given size.
- Delete nodes having greater value on right
- Count BST nodes that lie in a given range
- Check for BST
- Bottom View of Binary Tree
- Delete without head pointer
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Connect Nodes at Same Level
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Delete a node from BST
- Detect cycle in a directed graph
- Detect cycle in an undirected graph
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Topological sort
- Print a Binary Tree in Vertical Order
- Merge K sorted linked lists
- Find the number of islands
- Serialize and Deserialize a Binary Tree
- Circular tour
- Make Binary Tree
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Implementing Dijkstra | Set 1 (Adjacency Matrix)
- Max length chain
- Minimum Spanning Tree
- Largest BST
- Interleaved Strings
- Minimum Swaps to Sort
- Rat in a Maze Problem
- Bipartite Graph
- Max sum subarray by removing at most one element
- Number of root to leaf paths
- Find the Closest Element in BST
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Bridge Edge in Graph
- Print Nodes having K leaves
- Top View of Binary Tree
- Smallest range in K lists
- k-th smallest element in BST
- Polynomial Addition
- Euler circuit and Path
- Find a pair with given target in BST
- Count Element Occurences
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Node at distance
- Mirror of a given node
- Pairs violating BST property
- Maximum path sum from any node
- Leaves to DLL
- Largest Independent Set Problem
- Right Sibling in Binary Tree
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Path Count in Directed Graph
- C++ Friend function
- C++ Generic sort
- Swap Kth node from Beginning and Kth node from end in a singly linked list
- Add two numbers represented by Linked List

- Minimum sum partition
- Maximum of minimum for every window size
- Head to Tail ordering
- Merge Two Sorted Arrays
- Return two prime numbers
- Path of greater than equal to k length
- Minimum Cost Path
- N-Queen Problem
- Find median in a stream
- Travelling Salesman Problem
- Distinct palindromic substrings
- Reorder List
- Binary Tree to DLL