- Sum of array elements
- Reverse an Array
- Maximum and Minimum Of Array Elements
- Sum Of Digits
- Sum of Array
- Number of factors
- Palindrome String
- Armstrong Numbers
- Multiply 2 matrices
- Sum of Series
- Series AP
- Binary number to decimal number
- Sum of Digit is Pallindrome or not
- Automorphic Number
- Print 1 to n without using loops
- Remove Spaces
- Swap kth elements
- Smaller and Larger
- Check if an array is sorted
- Pattern of Strings
- Remainder Evaluation
- Find the median
- Mean
- Sum of Digits Multiple - copy
- Multiples Power
- Multiply Array
- Diagonal sum
- At least two greater elements
- Find difference between sum of diagonals
- Count of smaller elements
- Split Strings
- Sum of diagonals
- Extract the integers
- Front-Back Transformation - copy
- Check if two given circles touch each other
- Palindromic Array

Name

GB11

Institute

PGPS

Courses Attended

Overall Coding Score: 2857

Monthly Coding Score: 0

Weekly Coding Score: 0

- Maximum Occuring Character
- Binary String
- Consecutive elements
- Factorial
- Prime Number
- GCD of Array
- Repetitive Addition Of Digits
- Searching a number
- Power of 2
- Sort The Array
- Pythagorean Triplet
- Nth Fibonacci Number
- Sort a String
- Strong Number
- Print the Kth Digit
- Doubling the value
- Majority Element
- Sieve of Eratosthenes
- Shortest path from 1 to n
- Amend The Sentence
- Dice throw
- Rotate Array
- Permutations of a given string
- Parity of unsigned integer
- Check if the number is Fibonacci
- Missing number in array
- Swap two nibbles in a byte
- Maximum product of two numbers
- Number of paths
- Count total set bits
- Bit Difference
- Count numbers containing 4
- Reverse sub array
- Greater on right side
- Count zero
- Perfect Squares in a Range
- Sum of distinct elements
- Intersection of two arrays
- Union of two arrays
- Remove character
- Perfect Cubes in a Range
- Number of occurrence
- Maximum repeating number
- k largest elements
- Pairs of prime number
- Minimum difference pair
- Check if a number is power of another number
- Remove recurring digits
- Evaluate the x + a = b statement
- Find position of set bit
- Sum of Digits Divisibility
- Ways To Tile A Floor
- Generate Binary Numbers
- Shortest direction
- Factorial Number
- Count the numbers
- Find the Odd Occurence
- Find the remainder
- Angle between hour and minute hand
- Sum of large numbers
- Keypad typing
- Maximum Possible Sum of Products
- Rotating an Array
- Total distance travelled in an array
- Sum of Products
- Extraction of secret message
- Even occurring elements
- Punish the Students
- Total count
- Surpasser Count
- Product of Complex Numbers
- Sum of primes
- Minimize string value
- Rotate by 90 degree
- The AND Gate
- Maximum Area
- The OR Gate
- Multiple in Table Tennis
- 1's Complement
- Good String
- Mega Sale
- Set Bits
- Repeated sum of digits
- Subset Sums
- Longest Consecutive 1's
- Sum of divisors
- Common Divisors
- Count Squares
- Square Divisors
- Perfect Reversible String
- Max-Min conversion
- Nth Even Fibonacci Number
- Sum of Consecutives
- Disarium Number
- Pairs with given XOR
- Padovan Sequence
- No of Carry Operations
- Distance and Displacement
- Elements before which no element is bigger
- 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
- A Holiday Of Equality(Duplicate problem from codeforces)
- Interesting Patterns
- Encrypt the string - 1
- Replace the Bit
- Sum of product of x and y with floor(n/x) = y
- King's War
- Check squares
- Sum of two Squares [Duplicate]
- Find duplicates under given constraints
- Find first and last occurrence of x
- 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
- Check if divisible by 11
- XOR of all elements
- Check if divisible by 4
- Substrings with similar first and last characters
- Count rotations divisible by 4
- Find first set bit
- Minimize sum of alternate product
- Check for subsequence
- Find first repeated character
- A guy with a mental problem
- Fake Profile
- Check if divisible by 5
- Wrong Ball
- Magical String[Duplicate Problem]
- The Muskteers
- Index of first 1 in a sorted array of 0’s and 1’s
- Strong Numbers
- Does array represent Heap
- Missing number in shuffled array
- Find the element that appears once in sorted array
- Thief trying to escape
- Arranging the array
- 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
- URLify a given string
- Print first letter of every word in the string
- Reverse a string with spaces intact
- Sorted matrix
- Minimum move to front operations
- Smallest power of 2 greater than or equal to n
- Pair array product sum
- Equivalent Sub-Arrays
- Evaluate the expression
- All numbers with specific difference
- Count pair sum
- K-th distinct element
- Max Odd Sum
- Swap and Maximize
- Fibonacci in the array
- Rightmost different bit
- Count numbers divisible by M
- Check set bits
- Set kth bit
- Sorting Employees
- First Digit of Product of Numbers
- Make a Palindrome
- Total digits
- Toggle bits given range
- Twice counter
- Min value of x
- First K natural numbers
- Print first n Fibonacci Numbers
- Sum of distinct elements for a limited range
- Odd to Even
- Total number of Strings
- GCD, LCM and Distributive Property
- Minimum Distinct Ids
- Find the Highest number
- Product Sum
- Print Matrix in snake Pattern
- Change all even bits in a number to 0
- Anagram Palindrome
- Count digits in given number N which divide N
- Just One Mismatch
- Finger Game
- Smallest number repeating K times
- Rearrange the array
- Part Sort
- Ceil The Floor
- Sort first half in ascending and second half in descending
- Maximum weight difference
- Anshuman's Favourite Number
- Number of unique rectangles
- XOR Count Zero and One
- Repated Sum and then Multiply
- Absolute Difference of 1
- Maximum number of unique prime factors
- Remove common characters and concatenate
- Numbers having two adjacent set bits
- Prime Palindrome Sum
- Rectangle Number
- Sum of Digit Modified
- Find k-th character in string
- Repeated Character
- Numbers having alternate bits
- Red OR Green
- Sort String
- First and last Bit
- Difference between highest and lowest occurrence
- Minimum product pair
- Product of factors of number
- Find unique element
- An Easy problem
- Sum of first n terms
- Generate all cyclic permutations of a number
- Three distinct factors
- Smallest K digit number divisible by X
- Minimum Product of k Integers
- Maximize ∑arr[i]*i of an Array
- One's Complement
- Set the rightmost unset bit
- Sort the string in descending order
- Find N-th term in the series
- Sum of Digits Prime/Non-Prime
- Sum of all subsets formed by first N natural numbers
- Special Odd Series Sum
- Check if strings are rotations of each other or not
- Making elements distinct
- Factor OR Multiple
- Jay's Apples
- Reducing Walls
- Maximum Perimeter of Triangle from array
- Height of Heap
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Postorder Traversal
- Remove duplicate elements from sorted Array
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Largest product
- Preorder Traversal
- Implement strstr
- C++ STL | Set 1 (vector)
- C++ STL | Set 3 (map)
- C++ STL | Set 4 (stack)
- C++ STL | Set 5 (queue)
- C++ STL | Set 6 (set)
- Search a node in BST
- Equal Sum and XOR
- C++ STL | Set 7 (unordered map)
- C++ STL | Set 8 (unordered set)
- Remainder with 7
- Implement Atoi
- Find Number of Numbers
- Minimum distance between two numbers
- Find triplets with zero sum
- Anagram of String
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Identical Linked Lists
- Find the Sum of Last N nodes of the Linked List
- Modular Node
- Queue Reversal
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'
- Count Non-Leaf Nodes in Tree

- Frequencies of Limited Range Array Elements
- Anagram
- Adding One
- 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
- Magic Number
- Maximize Toys
- Large Factorial
- 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
- Good Pairs
- First Repeating Element
- Count Occurences of Anagrams
- Forming Rectangle
- Reverse words in a given string
- 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
- Maximum value in a bitonic array
- Next greater number set digits
- Finding Position
- Amount of Water
- Single Number
- 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
- Column name from a given column number
- Sum of Query I
- Maximum Product Subarray
- Remove Duplicates
- Kth distance
- Maximum sum increasing subsequence
- Array to BST
- Sum of two numbers represented as arrays
- Facing the sun
- Max Sum without Adjacents
- Common elements in three arrays(error)
- Make Number Odd
- Key Pair
- Maximum Difference
- Add Binary Strings
- Product array puzzle
- Multiply two polynomals
- Reverse Bits
- Count Smaller elements
- Reach the Nth point
- Subarray with given sum
- Adjacents are not allowed
- Leaders in an array
- Max rope cutting
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Cutting Rectangles
- Triplet Sum in Array
- Two Repeated Elements
- Three Great Candidates
- Count Multiples of Five
- Reach a given score
- Minimum element in a sorted and rotated array
- Search in a matrix
- Maximum Collatz sequence length
- Number Of Open Doors
- Fibonacci Sum
- Largest power of prime
- Check If two Line segments Intersect
- Largest number possible
- Pick values
- Missing element of AP
- Count the Zeros
- Distinct absolute array elements
- 0 - 1 Knapsack Problem
- Longest Common Increasing Subsequence
- Maximum Number of 1s
- The Prime Twins
- Find the number of sub-arrays having even sum
- Skip the work
- Tom and Jerry
- Left Most Digit of a product
- Right most non zero digit
- Greater power
- Special array reversal
- Cutted Segments
- Lexicographically previous permutation
- Minimum number of swaps needed
- Number of Factors of n!
- Number of distinct subsequences
- Maximum average subarray
- Help Mommy out
- Power of Numbers
- Minimum Notes Required
- Permutation divisibility
- Arithmetic Number
- Left out candies
- Perfect Numbers
- Count digits in a factorial
- Ordering of strings
- Change Bits
- Count number of substrings
- Maximum value
- Largest number with given sum
- Collection of pens
- Number of solutions
- The Nth Fibonnaci
- Product of two digit numbers
- Magic numbers
- Permutation with Spaces
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- Finding Profession
- Maximize Dot Product
- Max value
- Flip Bits
- Letter Writer
- Finding the numbers
- 3 Divisors
- Sort by Set Bit Count
- Minimum Energy
- Count Increasing Subsequences
- Prime Factors
- Least Prime Factor
- Left or Right Positioned Array
- Number Game
- Happy Number
- Maximize sum after K negations
- Max and Min Products
- Time Difference
- Modified Fibonacci
- Choose and Swap
- Equal 0, 1 and 2
- Adding Ones
- Kaprekar Number
- Lucas Number
- Pairs with specific difference
- Deficient Number
- Mr. Binary
- Equal Point in Sorted Array
- Find Maximum Sum Strictly Increasing Subarray
- Circle and Lattice Points
- Largest Even Number
- Count Pairs in an Array
- Find (a^b)%m
- Sphenic Number
- Sum of elements between k1'th and k2'th smallest elements
- Min sum formed by digits
- Min Subsets with Consecutive Numbers
- Move all negative elements to end
- String Manipulation
- Minimum Steps
- Help Nobita
- 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
- Knapsack with Duplicate Items
- Special Factorial Number
- Make Zeroes
- Sum of k smallest elements in BST
- Find sum of divisors
- Smallest factorial number
- Last non-zero digit in factorial
- Tom and String
- Pair with greatest product in array
- Kth Prime factor of a Number
- Longest K unique characters substring
- Last two digit Fibonacci
- Maximum no of 1's row
- Drive the car
- Friends Pairing Problem
- Gold Mine Problem
- Smallest subarray with sum greater than x
- Odd Game
- Seeds of a number
- Game of XOR
- Find largest word in dictionary
- Learn Geometry
- Love For The Twins
- Sum of all substrings of a number
- Minimum Operations
- Find all pairs with a given sum
- Check if frequencies can be equal
- Shortest distance in infinite tree
- Largest zigzag sequence
- Palindromic patitioning
- Meta Strings
- Numbers with same first and last digit
- Check if palindromic ignoring spaces
- Temple Offerings
- Jon and string
- Smallest window in a string containing all the characters of another string
- Largest Fibonacci Subsequence
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Maximum difference Indexes
- Count subsets having distinct even numbers
- Common elements
- Recursive sequence
- Rod Cutting
- Decreasing Sequence
- Fill array with 1's
- Subset with no pair sum divisible by K
- Element with left side smaller and right side greater
- Two numbers with odd occurrences
- Consecutive numbers for sum
- Element in a Series
- Array Subset of another array
- Count the paths
- First negative integer in every window of size k
- Length of longest subarray
- Sum of product of all pairs
- Game with String
- Sort the pile of cards
- Four Elements
- Paths to reach origin
- Subarray with 0 sum
- Faulty wiring and Bulbs
- Get Minimum Squares
- Subarray range with given sum
- Count number of words
- Group Anagrams Together
- Find the closest prime number to a given number
- Sum equals to Sum
- Find Pair Given Difference
- Count the elements
- Second most repeated string in a sequence
- Equalize an array in minimum operations
- Reverse vowels in a given string
- Minimum value product
- Count all possible paths from top left to bottom right
- Minimum Deletions
- Shortest Common Supersequence
- Sort the given array after applying the given equation
- Greedy Fox
- Nth number made of prime digits
- Find pairs with given relation
- Mr Modulo and Pairs
- Rearrange a string
- Minimum Number in a sorted rotated array
- Find distinct elements
- Sum of length
- Sort by Absolute Difference
- Sub-Array sum divisible by K
- Ticket sellers
- Primes sum
- Fibonacci Expression
- Swapping pairs make sum equal
- Toppers Of Class
- String Ignorance
- Count the number of ways to tile the floor of size n x m using 1 x m size tiles
- Break a number
- Minimum insertions to sort an array
- Minimum number of deletions to make a sorted sequence
- Minimum steps to minimize n as per given condition
- Minimum number of deletions.
- Replace a word
- Longest alternating subsequence
- Number of substrings divisible by 8 but not by 3
- Subset with sum divisible by m
- Number of subsequences in a string divisible by n
- Sum of Divisors in an array
- Find length of longest subsequence
- Ways to write n as sum
- Find all distinct subset (or subsequence) sums
- Longest subsequence-1
- Sum of average of all subsets
- Maximum sum Problem
- Number of permutation with K inversions
- String comparison
- Minimum indexed character
- Find number of times a string occurs as a subsequence
- Minimum Cost To Make Two Strings Identical
- Consecutive Array Elements
- Longest Repeating Subsequence
- Stickler Thief
- Compute sum of digits in all numbers from 1 to n
- Total number of non-decreasing numbers with n digits
- Maximum Product Cutting
- Power Set
- Even and odd elements at even and odd positions
- Compute nCr % p
- Palindromic Primes
- Compute (a*b)%c
- Find Last Digit Of a^b for Large Numbers
- Maximum number of zeroes
- Merging two unsorted arrays in sorted order
- Find maximum number
- Even Fibonacci Numbers Sum
- Smallest number by rearranging digits of a given number
- Power Of 2 and Subsequences
- Second Binary Digit
- Sum of Lengths of Non-Overlapping SubArrays
- Maximum sum of subarray less than or equal to x
- Maximum possible sum
- Roll the characters of a String
- Mersenne Prime
- Kth LSB
- Common Subsequence
- K-Ary Tree
- Boundary Elements of Matrix
- Sub-arrays with equal number of occurences
- Star elements
- Min Manipulations to make Strings Anagram
- Three consecutive duplicates
- Smallest number in one swap
- First K Digits
- Special Numbers
- Carol Numbers
- Sum of two large numbers
- Largest number in one swap
- Check if a Integer is power of 8 or not
- Geek and its Game of Coins
- Quick Exponents
- Maximum Height Tree
- Prime number of set bits
- Remove minimum number of elements
- Make a string from another string
- Divisible by 7
- Maximum value of expression
- Pairs with Positive Negative values
- Maximum prefix sum for a given range
- Count the pairs with maximum difference
- Minimum rotations to unlock a circular lock
- Convertible string
- Numbers containing 1, 2 and 3
- Modified Numbers and Queries
- 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
- Count Primes In Range
- Find unit digit in a Product
- Power of K in N! where K may be Non Prime
- Three Number Even Sum
- Beautiful Sequence
- Longest sub-sequence such that difference between adjacents is one
- Geek and his Array
- 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
- Minimum element whose N-th power is greater than product of an array
- Non-Repeating Element
- Find if string is K-Palindrome or not
- Longest common prefix
- Pairs which are Divisible by 4
- Interesting Series
- Geek and his Binary Strings
- 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
- Check if array contains contiguous integers with duplicates allowed
- Ease the Array
- Pair the minimum
- Count ways to express N as the sum of 1,3 and 4
- Counts Zeros Xor Pairs
- Easy string
- Count pairs Sum in matrices
- C++ Matrix Rotation by 180 degree
- Swap every two bits in bytes
- Print Binary Tree levels in sorted order
- Check if a number is divisible by 8
- Akaash's Assignment
- Common Divisor
- Minimum Swaps required to group all 1’s together
- Print all bitwise subsets of a number N
- Maximum sum of increasing order elements from n arrays
- Longest substring with equal number of 0s and 1s
- Ishaan's Curiosity
- Charul and vessels
- LCS of '0' K Repeated String
- Print Bracket Number
- Anand's Maths question
- Cutting Binary String
- Palindromic Series
- Check if any valid sequence is divisible by M
- Minimum changes to make all substrings distinct
- Akku and Binary Numbers
- Help Ishaan
- The Strange Assignment
- Smallest greater elements in whole array
- Minimal moves to form a string
- Save Ironman
- K-th missing element
- Pair with given sum in a sorted array
- Reverse a linked list
- Occurence of an integer in 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
- linked list of strings forms a palindrome
- Compare two linked lists
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- 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
- Nth 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
- Remove duplicate element from sorted Linked List
- Level order traversal in spiral form
- Reverse Level Order Traversal
- 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
- Postorder traversal from given Inorder and Preorder traversals
- Lowest Common Ancestor in a BST
- 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
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Find nth element of spiral matrix
- Max sum in the configuration
- Equilibrium index of an array
- Remove every k'th node
- Leaf at same level
- Is Binary Tree Heap
- Find Maximum value
- Multiply two linked lists
- Distinct occurrences
- Sorted subsequence of size 3
- Sum of subset differences
- You and your books
- Expression Tree
- Check if Linked List is Palindrome
- Max distance between same elements
- 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
- Minimum four sum subsequence
- Count distinct elements in every window
- Max Level Sum in Binary Tree
- Root to leaf paths sum
- String Modification
- Longest consecutive sequence in Binary tree
- Print Common Nodes in BST
- Level order traversal
- 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
- Root to Leaf Paths
- Maximum path sum
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- Counting elements in two arrays
- Sum of digits in factorial of a number
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- XOR of a given range
- Full binary tree
- Triplet with 0 sum in BST
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Arrange Consonants and Vowels
- Vertical sum
- Next Right Node
- Count Pairs whose sum is equal to X
- 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
- Change of Key in BST
- Normal BST to Balanced BST
- Leaf under budget
- Linked List Matrix
- Remove Half Nodes
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- 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
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Move all zeros to the front of the linked list
- Vertical Width of a Binary Tree
- Rotate doubly Linked List by P nodes

- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Sum Of Prime
- Rank The Permutations
- Maximum Sub Array
- Print Diagonally
- Overlapping Intervals
- Maximum Index
- Equal Sum
- 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)
- Egg Dropping Puzzle
- Count of n digit numbers whose sum of digits equals to given sum
- Edit Distance
- Magic Triplets
- 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
- Count Numbers in Range
- Case-specific Sorting of Strings
- Rank of Matrix
- Sum of bit differences
- Subset Sum Problem
- Factorials of large numbers
- Number of Coins
- Number following a pattern
- 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
- Jumping Numbers
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- 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
- Count Integral Points
- Sorting Elements of an Array by Frequency
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Special Keyboard
- Number of ways
- Dyck Path
- Minimum Cost of ropes
- Sum of Query II
- Form a palindrome
- Inversion of array
- Preorder to Postorder
- Maximum length Bitonic Subarray
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Maximum Sum Path in Two Arrays
- Stock span problem
- Convert an array to reduced form
- Minimum steps to get desired array
- Subsequence matching
- Dimensions of Rectangle
- Handshakes
- Tic-Tac-Toe
- Number to words
- Is Binary Number Multiple of 3
- Possible groups
- Maximum Sum Subsequence of length k
- Preorder Traversal and BST
- Search Pattern
- Longest Arithmetic Progression
- Square Numbers
- Subsets with XOR value
- Jumbled Strings
- Palindromic Strings
- Max possible amount
- Bleak Numbers
- Super Primes
- Smallest Sub-Array
- Maximum Profit
- Minimum sum
- Build the smallest
- Queries on Strings
- Largest number in K swaps
- Special Matrix
- Minimize the heights
- Next larger element
- Composite and Prime
- Taking 1 out of 3 consecutives
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Distinct Transformations
- Subsets
- Interesting Queries
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Divisible by 8
- Transform String
- Sum of Subarrays
- Count Divisors of Factorial
- Maximum calorie
- Prime Factors and their Powers
- Find the pattern
- Longest Common Substring
- Count Number
- Count Palindrome Sub-Strings of a String
- Rotate and delete
- Hamiltonian Path
- Minimums in Array
- Mathematical manipulation
- 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)
- Partition a number into two divisible parts
- Knight Walk
- Find all four sum numbers
- Substring - Subsequence problem
- Word Boggle
- Max absolute difference
- Print leaf nodes from preorder traversal of BST
- Distance of nearest cell having 1
- Is Sudoku Valid
- Find whether path exist
- Largest prime factor
- Unit Area of largest region of 1's
- Rearrange characters
- First non-repeating character in a stream
- Kth Smallest Factor
- Stepping Numbers
- Find the largest number
- Matrix Exponentiation
- Count in array
- K
^{th}largest element in a stream - Water Overflow
- Zero Sum Subarrays
- Smallest distinct window
- Floyd Warshall
- Nearly Sorted Algorithm
- Optimal binary search tree
- Smallest Absolute Difference
- Geek collects the balls
- Largest Sum Subarray of Size at least K
- Smallest Positive missing number
- Longest Bitonic subsequence
- Mobile numeric keypad
- Reverse Spiral Form of Matrix
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Minimum Time
- Perfect Sum Problem
- Longest Path in a matrix
- Array Pair Sum Divisibility Problem
- First Digit
- Top k numbers in a stream
- Factorial and numbers
- Page Faults in LRU
- Min cut Square
- N Digit numbers with digits in increasing order
- Rotten Oranges
- Mila and strings
- Prime factorization and geek number
- Modify array to maximize sum of adjacent differences
- Count ways to increase LCS length of two strings by one
- Sisters and coins
- Probability of Knight
- LCS of three strings
- Count digit groupings of a number
- Longest Common Prefix in an Array
- Count even length
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- In First But Second
- Smith Number
- Large Product-2
- Smallest Non-Zero Number
- Count of sum of consecutives
- Matrix Chain Multiplication
- Nine Divisors
- Maximum Tip Calculator
- Maximum GCD Pair
- Alternate Vowel and Consonant String
- Next higher number in one swap
- Previous number in one swap
- Count divisors of product of array elements
- Queries for counts of multiples in an array
- Next higher palindromic number using the same set of digits
- Find the last digit when factorial of A divides factorial of B
- Find the Maximum sum
- Last two digits of Fibonacci
- Number of subarrays with maximum values in given range
- Count of Palindromic substrings in an Index range
- Mike and Photographic Memory
- Lazy Pasha
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Longest Sub-Array with Sum K
- Pasha and Primes
- Sick Pasha
- Beautiful SubSequence
- Big Numbers Series
- Sum of XOR of all pairs
- Marks of PCM
- String Conversion
- Grouping Of Numbers
- Nitika and her queries
- Geek and Strings
- Buying Vegetables
- The Painter's Partition Problem
- Shreyansh and his bits
- Minimum swaps and K together
- Maximize the sum of selected numbers from an array to make it empty
- Find the N-th character
- Lucky alive person in a circle
- count special palindromic
- Akku and Arrays
- Rat Maze With Multiple Jumps
- Range Longest Correct Bracket Subsequence Queries
- 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
- Tree from Postorder and Inorder
- Bottom View of Binary Tree
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Construct Binary Tree from Parent Array
- Connect Nodes at Same Level
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Delete a node from BST
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Range Minimum Query
- Topological sort
- Print a Binary Tree in Vertical Order
- Merge K sorted linked lists
- Find the number of islands
- Circular tour
- Wildcard Pattern Matching
- Max rectangle
- Make Binary Tree From Linked List
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Remove loop in Linked List
- Max length chain
- Largest BST
- Interleaved Strings
- Sum of permutations
- 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
- Pots of Gold Game
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Print Nodes having K leaves
- Top View of Binary Tree
- Smallest range in K lists
- k-th smallest element in BST
- Polynomial Addition
- Binary Tree to CDLL
- Find a pair with given target in BST
- Count Element Occurences
- Occurences of 2 as a digit
- Populate Inorder Successor for all nodes
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct tree from Inorder and LevelOrder
- Node at distance
- Mirror of a given node
- Pairs violating BST property
- Maximum path sum from any node
- Largest Independent Set Problem
- Duplicate Subtrees
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum

- Minimum Points To Reach Destination
- Minimum sum partition
- Merge Two Sorted Arrays
- Next Smallest Palindrome
- Return two prime numbers
- A Simple Fraction
- Ugly Numbers
- Rohan's Love for Matrix
- Number Formation
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - Part 2
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Find median in a stream
- Travelling Salesman Problem
- Max Circular Subarray Sum
- Distinct palindromic substrings
- Longest Zig-Zag Sub Sequence
- Phone directory
- Numbers with one absolute difference
- Count the subarrays having product less than k
- Rachael's String Challenge
- Queries on a Matrix
- Adventure in a Maze
- Closest Palindrome
- Kill Captain America
- Reorder List
- Binary Tree to DLL
- AVL Tree Insertion
- Partition array to K subsets
- Maximum subset XOR
- Alien Dictionary
- AVL Tree Deletion
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree