- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Height of Binary Tree
- Finding middle element in a linked list
- Postorder Traversal
- Implement Queue using Linked List
- Preorder Traversal
- Implement strstr
- Implement Atoi
- Minimum distance between two numbers
- Find triplets with zero sum
- 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
- Queue Reversal
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'
- Count Non-Leaf Nodes in Tree
- Binary String
- Majority Element
- Shortest path from 1 to n
- Permutations of a given string
- Missing number in array
- Segregate Even and Odd numbers
- Find number of days between two given dates
- Greater on right side
- Immediate Smaller Element
- k largest elements
- Jumping Geek
- Absolute distinct count
- Rotating an Array
- Total distance travelled in an array
- Minimize string value
- Rotate by 90 degree
- Reverse each word in a given string
- String with numbers at its end
- Check squares
- Long Long Decimal
- Find the nth number in the sequence
- Minimize sum of alternate product
- Find the safe position
- Check for subsequence
- Check if the door is open or closed
- Find first repeated character
- XOR play
- Count even substrings
- Geek and Coffee Shop
- A guy with a mental problem
- Fake Profile
- Check if divisible by 5
- Wrong Ball
- The Muskteers
- Index of first 1 in a sorted array of 0’s and 1’s
- Strong Numbers
- Sherlock and his Enemies
- Does array represent Heap
- Missing number in shuffled array
- Find the element that appears once in sorted array
- Thief trying to escape
- Last index of One
- Arranging the array
- First element to occur k times
- 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
- URLify a given string
- Multiple of X closest to N
- Print first letter of every word in the string
- Reverse a string with spaces intact
- Sorted matrix
- Pair cube count
- Max value after m range operation
- Check set bits
- Total digits
- Difficulty of sentence
- Twice counter
- Min value of x
- First K natural numbers
- Maximum Integer Value
- Count triplets with sum smaller than X
- Odd to Even
- Find the Highest number
- Twisted Prime Number
- Minimum number to form the sum even
- Lucky number and a sum
- Closest Number
- Pronic Number
- Transform to prime
- First and last occurrences of X
- Boolean String Value
- Equalization of an array
- Part Sort
- Anshuman's Favourite Number
- Absolute Difference of 1
- Remove common characters and concatenate
- Powers game
- Numbers having two adjacent set bits
- Shortest un-ordered subarray
- Swapping Triangles
- Longest increasing subarray
- Sums of i-th row and i-th column
- Repeated I.Ds
- Binary representation of previous number
- Binary representation of next number
- Find k-th character in string
- Numbers having alternate bits
- Difference between highest and lowest occurrence
- Minimum product pair
- Product of factors of number
- An Easy problem
- Sum of first n terms
- Find the fine
- Three distinct factors
- Smallest K digit number divisible by X
- Set the rightmost unset bit
- Sort the string in descending order
- Remove all characters other than alphabets
- Even-Odd turn game
- Last index of a character in the string
- Check for three consecutive numbers
- Encoding names
- The amazing number
- Jumpy Ball
- Reducing Walls
- Height of Heap

Name

Arun Kumar

Rank in Institute

#2

Courses Attended

Campus Ambassador

Overall Coding Score: 1013

Monthly Coding Score: 0

Weekly Coding Score: 0

- Reverse a linked list
- Delete N nodes after M nodes of a linked list
- Rotate a Linked List
- Pairwise swap elements of a linked list
- Add two numbers represented by linked lists
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Sorted insert for circular linked list
- Reverse a Doubly Linked List
- Right View of Binary Tree
- K distance from root
- Maximum Width of Tree
- Check for Balanced Tree
- Nth node from end of linked list
- Left View of Binary Tree
- Merge two sorted linked lists
- Sum Tree
- Transform to Sum Tree
- Remove duplicate element from sorted Linked List
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Reverse alternate levels of a perfect binary tree
- BFS of graph
- Determine if Two Trees are Identical
- Root to leaf path sum
- Print all nodes that don't have sibling
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Largest subarray of 0's and 1's
- Level order traversal Line by Line
- Largest subarray with 0 sum
- Odd even level difference
- Remove every k'th node
- Leaf at same level
- Validate an IP Address
- Expression Tree
- Check if Linked List is Palindrome
- Check whether BST contains Dead End
- Delete a Node in Single Linked List
- Check if two strings are k-anagrams or not
- Special Stack
- Root to leaf paths sum
- Longest consecutive sequence in Binary tree
- Level order traversal
- Index Of an Extra Element
- Merge Sort for Linked List
- Intersection of Two Linked Lists
- Ancestors in Binary Tree
- Root to Leaf Paths
- Maximum path sum
- Max and min element in Binary Tree
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- Modify Linked List-1
- Construct Tree from Inorder & Preorder
- Merge Lists Alternatingly
- Arrange Consonants and Vowels
- Count Pairs whose sum is equal to X
- Check if Tree is Isomorphic
- Find length of Loop
- Deletion and Reverse in Linked List
- Linked List Matrix
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Deletion in a Binary Tree
- Nodes at Odd Levels
- Closest Neighbor in BST
- Sum of the Longest Bloodline of a Tree (Sum of nodes on the longest path from root to leaf node)
- 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
- Delete middle element of a stack
- C++ Function overloading
- C++ complex number addition (operator overloading)
- Anagram
- Trailing zeroes in factorial
- Reverse words in a given string
- Isomorphic Strings
- Sort an array of 0s, 1s and 2s
- Next greater number set digits
- Segregate even and odd nodes in a Linked List
- Does robot moves circular
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Remove Duplicates
- Maximum sum increasing subsequence
- Array to BST
- Sum of two numbers represented as arrays
- Max Sum without Adjacents
- Key Pair
- 0 - 1 Knapsack Problem
- Longest Common Increasing Subsequence
- Pangram Strings
- Find the number of sub-arrays having even sum
- Count the Reversals
- Maximize The Cut Segments
- Minimum number of swaps needed
- Count number of substrings
- Raju and coins
- Equilibrium point
- Finding the numbers
- Mr. Binary
- Sphenic Number
- Circular Prime Number
- Min sum formed by digits
- Min Subsets with Consecutive Numbers
- Move all negative elements to end
- String Manipulation
- Help Nobita
- Maximum 0’s between two immediate 1’s
- Binary Tree K level sum
- Exit Point in a Matrix
- 1[0]1 Pattern Count
- Knapsack with Duplicate Items
- Special Factorial Number
- Make Zeroes
- Let's Play!!!
- Sum of k smallest elements in BST
- A Game of 2
- Find sum of divisors
- Reverse Coding
- Flood fill Algorithm
- Tom and String
- Save The Nation
- Pair with greatest product in array
- Encrypt the string - 2
- Kth Prime factor of a Number
- Decode the pattern
- Longest K unique characters substring
- Roman Number to Integer
- Maximum no of 1's row
- Max sum in sub-arrays
- Smallest subarray with sum greater than x
- Odd Game
- Rahul a Geek
- Game of XOR
- Find largest word in dictionary
- Learn Geometry
- Love For The Twins
- Minimum Operations
- Find all pairs with a given sum
- Check if frequencies can be equal
- Shortest distance in infinite tree
- Palindromic patitioning
- Meta Strings
- Siri and her new College
- Numbers with same first and last digit
- Check if palindromic ignoring spaces
- Rahul and his Villa
- Temple Offerings
- Sid and his prime money
- Matrix Game - 1
- Excel Sheet | Part - 2
- Playing with mobile numbers
- Largest Fibonacci Subsequence
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Count subsets having distinct even numbers
- Common elements
- Rod Cutting
- Fill array with 1's
- Element with left side smaller and right side greater
- Two numbers with odd occurrences
- Consecutive numbers for sum
- Divisible by 5 or not-1
- Count the paths
- First negative integer in every window of size k
- Unique substrings
- Sum of product of all pairs
- Game with String
- N-divisors
- Sort the pile of cards
- Four Elements
- Find the highest occurring digit in prime numbers in a range
- Subarray with 0 sum
- Combine the strings
- Subarrays with given sum
- Group Anagrams Together
- Number of divisors in a given range
- Sum equals to Sum
- Count the elements
- Possible Pairs
- Second most repeated string in a sequence
- Reverse vowels in a given string
- Count all possible paths from top left to bottom right
- Sort the given array after applying the given equation
- k sorted array
- Assign Mice Holes
- Nth number made of prime digits
- Mr Modulo and Pairs
- Rearrange a string
- Find distinct elements
- Sub-Array sum divisible by K
- Number of Groups
- Ticket sellers
- Minimum Toogles to partition
- Primes sum
- Fibonacci Expression
- Swapping pairs make sum equal
- Number and the Digit Sum
- Money Division
- Decode It
- Sum of K Primes
- String Ignorance
- Break a number
- Replace a word
- Subset with sum divisible by m
- String comparison
- Consecutive Array Elements
- Stickler Thief
- Total number of non-decreasing numbers with n digits
- Minimum Swaps for Bracket Balancing
- Even and odd elements at even and odd positions
- Geek and its Colored Strings
- Maximum number of zeroes
- Transform the array
- Maximum sum of subarray less than or equal to x
- Maximum possible sum
- Roll the characters of a String
- Chocolate Station
- Right angled triangles
- Count the triplets
- Maximum size of consecutives
- Star elements
- Three consecutive duplicates
- Smallest number in one swap
- Largest number in one swap
- Check if a Integer is power of 8 or not
- Find the minimum time
- Psuedobinary Numbers
- Express N as sum of 4 prime numbers
- Find Unique pair in an array with pairs of numbers
- Numbers containing 1, 2 and 3
- Number of subarrays whose minimum and maximum are same
- Find k-th missing element
- GeeksforGeeks New System
- Set all the bits in given range of a number
- Longest sub-sequence such that difference between adjacents is one
- Maximum number of characters between any two same character
- Cumulative frequency of count of each element in an unsorted array
- Count of substrings containing K ones
- Minimum element whose N-th power is greater than product of an array
- Morning Assembly
- Find out the Team
- Nearest multiple of 10
- Remainder of array multiplication
- Ease the Array
- Multiply by 11
- Print Binary Tree levels in sorted order
- Minimum Swaps required to group all 1’s together
- Summing the Sum
- The Non-repetitive String
- Longest substring with equal number of 0s and 1s
- Ishaan's Curiosity
- Print Bracket Number
- Find n-th Fortunate Number
- K-th missing element

- 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
- Tree from Postorder and Inorder
- 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
- Clone a linked list with next and random pointer
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Boundary 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
- Merge K sorted linked lists
- Find the number of islands
- Check if subtree
- Remove loop in Linked List
- Implementing Dijkstra | Set 1 (Adjacency Matrix)
- Minimum Spanning Tree
- Largest BST
- Interleaved Strings
- Bipartite Graph
- Number of root to leaf paths
- Find the Closest Element in BST
- Length of longest palindrome in linked list
- Print Nodes having K leaves
- Top View of Binary Tree
- k-th smallest element in BST
- Polynomial Addition
- Find a pair with given target in BST
- Leaves to DLL
- Right Sibling in Binary Tree
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Coin Change
- Kadane's Algorithm
- Excel Sheet | Part - 1
- 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)
- Maximum Rectangular Area in a Histogram
- Path in Matrix
- Trapping Rain Water
- Subset Sum Problem
- Find Prime numbers in a range
- Stock buy and sell
- Possible words from Phone digits
- Longest Palindrome in a String
- Maximum of all subarrays of size k
- Form a palindrome
- Length of the longest substring
- Longest consecutive subsequence
- Stock span problem
- Preorder Traversal and BST
- Smallest Sub-Array
- Maximum Profit
- Your Social Network
- Special Matrix
- Next larger element
- Kth smallest element
- Longest Common Substring
- Snake and Ladder Problem
- Recursively remove all adjacent duplicates
- Partition a number into two divisible parts
- Print leaf nodes from preorder traversal of BST
- Find whether path exist
- Largest prime factor
- Check Mirror in N-ary tree
- Unit Area of largest region of 1's
- Rearrange characters
- First non-repeating character in a stream
- Kth Smallest Factor
- K
^{th}largest element in a stream - Zero Sum Subarrays
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Minimum number of steps to reach a given number.
- Smallest Positive missing number
- Maximum Intervals Overlap
- Perfect Sum Problem
- Top k numbers in a stream
- Firing employees
- CamelCase Pattern Matching
- Longest Common Prefix in an Array
- In First But Second
- Row with minimum number of 1's
- Count of sum of consecutives
- Maximum bitonic subarray sum
- Find the element at given index
- Next higher number in one swap
- Previous number in one swap
- Count divisors of product of array elements
- Next higher palindromic number using the same set of digits
- Last two digits of Fibonacci
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Make Matrix Beautiful
- Minimum swaps and K together
- Range Longest Correct Bracket Subsequence Queries

Published Count(102)

- Magical Number
- Message decoding
- Sid and his prime money
- Index of first 1 in a sorted array of 0’s and 1’s
- Jon and string
- Another Matrix Game
- Tracks
- Element with left side smaller and right side greater
- Combine the strings
- Carry counter
- Second most repeated string in a sequence
- Primes sum
- Even and odd elements at even and odd positions
- Minimum number of flipped bits
- Change the string
- Numbers with alternative 1's
- Similar expressions
- Count of sum of consecutives
- Longest common substring value of two numbers
- Maximum possible sum
- Lucky number and a sum
- Positive and negative elements
- Equalization of an array
- Right angled triangles
- Count the triplets
- Sum-string
- Extract the integers
- Maximum size of consecutives
- Star elements
- Maximum weight difference
- Smallest number in one swap
- Number of unique rectangles
- Sum of two large numbers
- Largest number in one swap
- Maximum number of unique prime factors
- Numbers having two adjacent set bits
- Check if a Integer is power of 8 or not
- Numbers with one absolute difference
- Sums of i-th row and i-th column
- Maximum bitonic subarray sum
- Binary representation of previous number
- Count number of digits after decimal
- Count the characters
- Binary representation of next number
- Merge two strings
- Find the element at given index
- Next higher number in one swap
- Numbers having alternate bits
- Previous number in one swap
- Remove minimum number of elements
- Minimum product pair
- Product of factors of number
- Check if divisible by 10
- Count divisors of product of array elements
- Print N-bit binary numbers having more 1’s than 0’s
- Maximum value of expression
- Queries for counts of multiples in an array
- Next higher palindromic number using the same set of digits
- Count the subarrays having product less than k
- Find the fine
- Three distinct factors
- Express N as sum of 4 prime numbers
- Series with largest GCD and sum equals to N
- Count the pairs with maximum difference
- Number of compositions of a natural number
- Minimum rotations to unlock a circular lock
- Find the last digit when factorial of A divides factorial of B
- Find Unique pair in an array with pairs of numbers
- Smallest K digit number divisible by X
- Numbers containing 1, 2 and 3
- Number of subarrays whose minimum and maximum are same
- Count the numbers satisfying (m + sum(m) + sum(sum(m))) equals to N
- Pairs with Difference less than K
- Find all factorial numbers less than or equal to N
- Set all the bits in given range of a number
- Biggest integer having maximum digit sum
- Sort the string in descending order
- Find N-th term in the 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
- Count of substrings containing K ones
- Sum of all subsets formed by first N natural numbers
- Minimum element whose N-th power is greater than product of an array
- Count number of elements between two given elements in array
- Remove all characters other than alphabets
- Find the closest number
- Last index of a character in the string
- Maximize the volume of Cuboid
- Longest subarray with sum divisible by K
- Smallest subarray with all occurrences of a most frequent element
- Maximum triplet sum in array
- Subarrays with equal 1s and 0s
- Sum of all divisors from 1 to n
- Maximum distinct elements after removing K elements
- Maximum difference of zeros and ones in binary string
- Print K smallest elements in their original order
- Sexy Primes
- Count numbers with unit digit K in given range
- Nearest multiple of 10
- Longest substring with equal number of 0s and 1s
- Find the N-th character

Published Count(2)