- Count nodes of linked list
- Delete node in Doubly Linked List
- Size of Binary Tree
- Inorder Traversal
- 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
- Doubly linked list Insertion
- Remove duplicate elements from sorted Array
- Print all possible strings
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Third largest element
- Convert to Roman No
- Preorder Traversal
- Implement strstr
- Search a node in BST
- Equal Sum and XOR
- C++ STL | Set 8 (unordered set)
- Implement Atoi
- Find Number of Numbers
- Minimum distance between two numbers
- Find triplets with zero sum
- 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
- Find n/k th node in Linked list
- Maximum in Struct Array
- Queue Reversal
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'
- Count Non-Leaf Nodes in Tree
- Mrs. S- JAVA Bits Set 1
- C++ Inheritance introduction
- C++ Call by reference
- Java Generic Class
- Start Coding
- logical Operators
- Sort and Reverse Vector
- Front to Back
- Stack designer
- Queue Designer
- Sum the common elements
- Parties and seats
- Set Operations
- Check if a string is Isogram or not
- Binary String
- Maximum Occuring Character
- Binary String
- Consecutive elements
- Factorial
- Prime Number
- LCM And GCD
- GCD of Array
- Repetitive Addition Of Digits
- Searching a number
- Power of 2
- 2's Complement
- Sort The Array
- Pythagorean Triplet
- Nth Fibonacci Number
- Strong Number
- Majority Element
- Shortest path from 1 to n
- Amend The Sentence
- Count possible triangles
- Dice throw
- Rotate Array
- Permutations of a given string
- Parity of unsigned integer
- Check if the number is Fibonacci
- 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
- Segregate Even and Odd numbers
- Count total set bits
- Number is sparse or not
- Bit Difference
- Convert from any base to decimal
- Greater on right side
- Immediate Smaller Element
- Count zero
- Perfect Squares in a Range
- Binary Array Sorting
- Intersection of two arrays
- Convert array into Zig-Zag fashion
- Remove character
- Number of occurrence
- Maximum repeating number
- k largest elements
- Student record
- Pairs of prime number
- Minimum difference pair
- Find position of set bit
- Sum of all prime numbers between 1 and N.
- Pattern Jumping
- Maximum money
- Ways To Tile A Floor
- Generate Binary Numbers
- Smallest number
- Find the Odd Occurence
- Angle between hour and minute hand
- Keypad typing
- Check if given four points form a square
- Maximum Possible Sum of Products
- Sum of Products
- Searching an element in a sorted array
- The Lazy Caterer's Problem
- Matching Pair
- Minimize string value
- Rotate by 90 degree
- Rearranging array
- Reverse array in groups
- The AND Gate
- Set Bits
- Repeated sum of digits
- Professor and Parties
- Longest Consecutive 1's
- Sum of divisors
- Count Sorted Rows
- Padovan Sequence
- Missing number
- Make a Distinct Digit Array
- String Reversal
- Reverse each word in a given string
- Check if a number can be expressed as x^y
- Interesting Patterns
- Starting Point
- Encrypt the string - 1
- Replace the Bit
- Sum of product of x and y with floor(n/x) = y
- Find first and last occurrence of x
- Type of array
- Sort in specific order
- Check if two arrays are equal or not
- Check if string is rotated by two places
- Invert the Bits
- Unique Numbers
- XOR of all elements
- Substrings with similar first and last characters
- Find first set bit
- Check for subsequence
- Find first repeated character
- Count even substrings
- Geek and Coffee Shop
- Index of first 1 in a sorted array of 0’s and 1’s
- Does array represent Heap
- Find the element that appears once in sorted array
- Thief trying to escape
- Arranging the array
- Transpose of Matrix
- First element to occur k times
- Check whether K-th bit is set or not
- Extract Maximum
- Uncommon characters
- Sum of numbers in string
- Find the smallest and second smallest element in an array
- Find second largest element
- URLify a given string
- Print first letter of every word in the string
- Wildcard string matching
- Sorted matrix
- Sum Terms Nth Row
- Smallest power of 2 greater than or equal to n
- Pair cube count
- Max Sum Subarray of size K
- Minimum Difference among K
- Rightmost different bit
- Count numbers divisible by M
- Check set bits
- Set kth bit
- Sorting Employees
- Quick Left Rotation
- Difficulty of sentence
- Toggle bits given range
- Twice counter
- Shuffle integers
- Elements in the Range
- Print first n Fibonacci Numbers
- Count triplets with sum smaller than X
- Check perfect square
- Total number of Strings
- Find the Highest number
- Change all even bits in a number to 0
- Anagram Palindrome
- Closest Number
- First and last occurrences of X
- Positive and negative elements
- Boolean String Value
- String Subsequence Game
- Anshuman's Favourite Number
- The Counting Game !!
- XOR Count Zero and One
- Absolute Difference of 1
- Remove common characters and concatenate
- Longest increasing subarray
- Left Rotate Matrix K times
- Rectangle Number
- Sum of Digit Modified
- Count the characters
- Find k-th character in string
- Good or Bad string
- Sort String
- Find the fine
- Smallest K digit number divisible by X
- One's Complement
- Set the rightmost unset bit
- The Cycle Game
- Stuti and her Problem
- Corner Digits
- Series X1
- Special Series Sum
- Special Odd Series Sum
- Floating point number even or odd
- Factors Sum
- Find sum of even factors of a number
- C++ Corresponding position in the two strings that hold exactly the same characters.
- Product of maximum in first array and minimum in second
- Most frequent word in an array of strings
- Check if strings are rotations of each other or not
- Encoding names
- Set all odd bits
- Message Spreading
- C++ Function Overloading
- Sum of f(a[i], a[j]) over all pairs in an array of n integers
- Ishaan Loves Chocolates
- Midori and chocolates
- Factor OR Multiple
- Riya's Test
- Confused pappu
- Difference series
- Multiply left and right array sum.
- Gray Code
- Gray to Binary equivalent
- Doctors Clinic
- How Many X's?
- Height of Heap
- Tower of Hanoi

Name

abducodes

Rank in Institute

#1

Overall Coding Score: 1716

Monthly Coding Score: 0

Weekly Coding Score: 0

- Reverse a linked list
- Occurence of an integer in a Linked List
- Delete N nodes after M nodes of a linked list
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- 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
- Linked List in Zig-Zag fashion
- 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
- Heap Sort
- 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
- Intersection of two sorted Linked lists
- Find Transition Point
- Queue using two Stacks
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- BFS of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Print all nodes that don't have sibling
- Postorder traversal from given Inorder and Preorder traversals
- Absolute List Sorting
- 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
- 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
- Max sum in the configuration
- Equilibrium index of an array
- Remove every k'th node
- Leaf at same level
- Is Binary Tree Heap
- Match specific pattern
- Multiply two linked lists
- Distinct occurrences
- Sorted subsequence of size 3
- Josephus problem
- Expression Tree
- Maximum Difference
- Check if Linked List is Palindrome
- Max distance between same elements
- Generate Grey Code Sequences
- Kth largest element in BST
- Count distinct elements in every window
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Sort a stack
- Print Common Nodes in BST
- Level order traversal
- Peak element
- Delete nodes greater than k
- Index Of an Extra Element
- Merge Sort for Linked List
- Convert Ternary Expression to Binary Tree
- 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
- Mountain Subarray Problem
- Root to Leaf Paths
- Maximum path sum
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- XOR Linked List
- Counting elements in two arrays
- Reverse a string using Stack
- XOR of a given range
- Full binary tree
- Modify Linked List-1
- Symmetric Tree
- Construct BST from Postorder
- Merge Lists Alternatingly
- Huffman Decoding
- Huffman Decoding-1
- Vertical sum
- Next Right Node
- Count Pairs whose sum is equal to X
- Check if Tree is Isomorphic
- Depth of node
- Predecessor and Successor
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Deletion and Reverse in Linked List
- Normal BST to Balanced BST
- 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
- 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
- Tilt of Binary Tree
- Delete middle element of a stack
- Vertical Width of a Binary Tree
- Rotate doubly Linked List
- C++ Multi-level inheritance
- Java Collections | Set 7 (LinkedList)
- C++ complex number addition (operator overloading)
- C++ Template
- The New Line
- The Size of
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- While loop- printTable
- Learning Macros
- Start Coding - Java
- The New Line - Java
- Taking input - Java
- Learn to Comment - Java
- nextLine and next
- Bitwise Operators - Java
- Even Odd - Java
- While loop- printTable - Java
- Need Some Change
- Matrix Interchange
- Xoring and Clearing
- Even Subsets
- Count Odd Even - Java
- Matrix Interchange - Java
- Xoring and Clearing - Java
- Magic in CPP
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Pair in Java
- Maximum Area Rectangle
- Sum of Big Integers
- BigInteger Multiply
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- ArrayList Operation
- Stack Operations
- Queue Operations
- Get min at pop
- Deque Implementations
- Min Heap implementation
- Frequency Game
- Greater and Smaller Ones
- Duplicate Elements
- Multiset Operations
- Multimap Operations
- Pair Sum Existence
- Pair Sum Existence- Revisited
- Dictionary Usage - Java
- Dictionary Usage 2 - Java
- The Modified String
- Reverse words in a given string
- Minimum indexed character
- Pangram Checking
- Minimum indexed character
- Frequencies of Limited Range Array Elements
- Anagram
- Wave Array
- Print Pattern
- Search in a Rotated Array
- Squares in N*N Chessboard
- Trailing zeroes in factorial
- Non Repeating Character
- Minimum number of Coins
- 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
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Remove “b” and “ac” from a given string
- Equal Sum and Product
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Maximum value in a bitonic array
- Finding Position
- Next sparse binary number
- Single Number
- 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
- N meetings in one room
- Addition of submatrix
- Maximum sum increasing subsequence
- Facing the sun
- Triangular Number
- Max Sum without Adjacents
- Arrange Balls
- Make Number Odd
- Key Pair
- Maximum Difference
- Product array puzzle
- Multiply two polynomals
- Reverse Bits
- Reach the Nth point
- Count numbers
- Leaders in an array
- Swap all odd and even bits
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Where Am I ?
- Triplet Sum in Array
- Reach a given score
- Minimum element in a sorted and rotated array
- Search in a matrix
- Day of the week
- Largest power of prime
- Number of 1's in smallest repunits
- Chinky and diamonds
- Count the Zeros
- Trail of ones
- Skip the work
- Valid Substring
- Count the Reversals
- Tom and Jerry
- Next Prime Palindrome
- Number of ways to find two numbers
- Game of Death in a circle
- Arithmetic Number
- Left out candies
- Perfect Numbers
- Ordering of strings
- Change Bits
- Collection of pens
- Product of two digit numbers
- Magic numbers
- Element appearing once
- Floor in a Sorted Array
- Buildings receiving sunlight
- Minimum Energy
- Collecting Trees
- Happy Number
- Game of cells
- Adding Ones
- Min Number of Flips
- Circle and Lattice Points
- Count Pairs in an Array
- Min sum formed by digits
- String Manipulation
- Binary Tree K level sum
- Maximum Sum Bitonic Subsequence
- Knapsack with Duplicate Items
- Find sum of divisors
- Reverse Coding
- Decode the pattern
- Roman Number to Integer
- Decode the string
- Max sum in sub-arrays
- 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
- 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
- Meta Strings
- Excel Sheet | Part - 2
- Largest Fibonacci Subsequence
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- Evaluation of Postfix Expression
- Common elements
- Sequence of Sequence
- Element in a Series
- Array Subset of another array
- First negative integer in every window of size k
- Length of longest subarray
- Sum of product of all pairs
- Maximum Sum LCM
- Get Minimum Squares
- Group Anagrams Together
- Number of divisors in a given range
- Count the elements
- Second most repeated string in a sequence
- Count all possible paths from top left to bottom right
- Shortest Common Supersequence
- Assign Mice Holes
- Large number division
- Mr Modulo and Pairs
- Rearrange a string
- Euler Totient Function
- Number of Groups
- Swapping pairs make sum equal
- Decode It
- Bitonic Generator Sort
- Count of strings that can be formed using a, b and c under given constraints
- Maximum sum Problem
- Minimum indexed character
- High-effort vs. Low-effort
- Longest Repeating Subsequence
- Stickler Thief
- Remaining String
- Compute (a*b)%c
- Merging two unsorted arrays in sorted order
- Even Fibonacci Numbers Sum
- Sum of Lengths of Non-Overlapping SubArrays
- Generate all palindromic numbers less than n
- Chocolate Station
- Common Subsequence
- Count the triplets
- Flipping bits No and Binary Format in Reverse Order
- Check if a Integer is power of 8 or not
- Required Rooms
- Prime number of set bits
- Array's Game
- Convertible string
- Find unit digit in a Product
- Power of K in N! where K may be Non Prime
- Set all the bits in given range of a number
- Maximum number of characters between any two same character
- Cumulative frequency of count of each element in an unsorted array
- Winner of an election
- Next Happy Number
- Summed Matrix
- Fact Digit Sum
- Closing bracket index
- Number of pairs with maximum sum
- Roof Top
- Pairs which are Divisible by 4
- Ritika's Money
- Count unset bits in a given Range
- Find winner of the Game of Nim
- Sum of all divisors from 1 to n
- Sexy Primes
- The Mighty Divisible Number
- Arya and The Great War
- N trailing zeroes in factorials
- Mystic Falls School
- Find out the Team
- Count numbers with unit digit K in given range
- Largest sum of digits in all Divisors
- Swap the closest and farthest digits
- Nearest multiple of 10
- Remove leading zeros from an IP address
- 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
- Extra Perfect Numbers
- C++ Visible Numbers
- Amicable Pair
- Counts Zeros Xor Pairs
- Easy string
- Swap every two bits in bytes
- Check if a number is divisible by 8
- XOR of two numbers after making length of their binary representations equal
- Arya's Long String
- Ishaan and Sticks
- Akaash's Assignment
- The Inverting Factor
- Print all bitwise subsets of a number N
- Longest substring with equal number of 0s and 1s
- Holi Balloons
- Print Bracket Number
- The Even Array
- Minimum changes to make all substrings distinct
- Smallest number with sum of digits as N and divisible by 10^N
- Delete array elements which are smaller than next or become smaller
- Minimal moves to form a string
- Penalty Shooters

- 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
- Quick Sort on Linked List
- 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
- Construct Binary Tree from Parent Array
- Connect Nodes at Same Level
- 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
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Print a Binary Tree in Vertical Order
- Merge K sorted linked lists
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Make Binary Tree From Linked List
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Interleaved Strings
- Minimum Swaps to Sort
- 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
- Top View of Binary Tree
- k-th smallest element in BST
- Polynomial Addition
- Merge Sort on Doubly Linked List
- Binary Tree to CDLL
- Find a pair with given target in BST
- Occurences of 2 as a digit
- Construct expression tree
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Leaves to DLL
- Largest Independent Set Problem
- Construct Tree from Preorder Traversal
- Construct a Full Binary Tree
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- C++ Generic sort
- Operations on PriorityQueue
- Swap Kth nodes from ends
- Maximum sum of Non-adjacent nodes
- Smallest Positive missing number
- Unique BST's
- Unit Area of largest region of 1's
- Subarrays with equal 1s and 0s
- Sorting Elements of an Array by Frequency
- Longest consecutive subsequence
- Case-specific Sorting of Strings
- Count ways to N'th Stair(Order does not matter)
- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Sum Of Prime
- Excel Sheet | Part - 1
- Maximum Sub Array
- Print Diagonally
- Longest Increasing Subsequence
- Parenthesis Checker
- Longest Common Subsequence
- Count ways to N'th Stair(Order does not matter)
- Egg Dropping Puzzle
- Edit Distance
- Magic Triplets
- nCr
- Maximum Rectangular Area in a Histogram
- Count of Subarrays
- Longest Even Length Substring
- Trapping Rain Water
- Case-specific Sorting of Strings
- Sum of bit differences
- Factorials of large numbers
- Number of Coins
- Number following a pattern
- Find Prime numbers in a range
- Largest Number formed from an Array
- Jumping Numbers
- Longest Palindrome in a String
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- 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
- Minimum Cost of ropes
- Sum of Query II
- Form a palindrome
- Preorder to Postorder
- 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
- Palindromic Array
- Is Binary Number Multiple of 3
- Max possible amount
- Maximum Profit
- Next larger element
- X Total Shapes
- Unique BST's
- Word Break
- Kth smallest element
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Snake and Ladder Problem
- Recursively remove all adjacent duplicates
- Trie | (Insert and Search)
- 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
- Count subsequences of type a^i b^j c^k
- K
^{th}largest element in a stream - Zero Sum Subarrays
- Huffman Encoding
- Nearly Sorted Algorithm
- Infix to Postfix
- Largest Sum Subarray of Size at least K
- Longest Bitonic subsequence
- Maximum Intervals Overlap
- Perfect Sum Problem
- Rotten Oranges
- Longest Common Prefix in an Array
- Numbers with alternative 1's
- Alternate Vowel and Consonant String
- The Infinite String
- Pizza Mania
- Killing Spree
- Lazy Pasha
- The Tiny Miny
- Save Gotham!
- Optimal Strategy For A Game