- Print Linked List elements
- Delete node in Doubly Linked List
- Count Leaves in Binary Tree
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Binary Search
- Convert to Roman No
- Implement strstr
- Search a node in BST
- Remainder with 7
- Implement Atoi
- Find triplets with zero sum
- Linked List Insertion
- Minimum element in BST
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Queue Reversal
- Search an Element in an array
- Binary String
- LCM And GCD
- Power of 2
- Pythagorean Triplet
- Majority Element
- Sieve of Eratosthenes
- Count possible triangles
- Dice throw
- Rotate Array
- Permutations of a given string
- Missing number in array
- Number of paths
- Count total set bits
- Number is sparse or not
- Bit Difference
- Immediate Smaller Element
- Convert array into Zig-Zag fashion
- Number of occurrence
- Check if a number is power of another number
- Sum of all prime numbers between 1 and N.
- Ways To Tile A Floor
- Generate Binary Numbers
- Find the Odd Occurence
- Angle between hour and minute hand
- Rotating an Array
- Reverse array in groups
- Longest Consecutive 1's
- Minimize the sum of product
- Squares in a Matrix
- Find first and last occurrence of x
- Type of array
- Sum of dependencies in a graph
- Sort in specific order
- Check if two arrays are equal or not
- Check if string is rotated by two places
- Unique Numbers
- Find first set bit
- Find first repeated character
- Find the element that appears once in sorted array
- Print an array in Pendulum Arrangement
- First element to occur k times
- Check whether K-th bit is set or not
- Uncommon characters
- Find the smallest and second smallest element in an array
- Rotate Bits
- Check if a string is Isogram or not
- Rightmost different bit
- Set kth bit
- Toggle bits given range
- Print first n Fibonacci Numbers
- Absolute Difference of 1
- Find the fine
- Find the closest number
- Remove consonants from a string
- Sum of f(a[i], a[j]) over all pairs in an array of n integers
- Ishaan Loves Chocolates
- Gray Code
- Gray to Binary equivalent
- Height of Heap

Name

Rank in Institute

#7

Courses Attended

Campus Ambassador

Overall Coding Score: 1790

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
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Merge 2 sorted linked list in reverse order
- Linked List in Zig-Zag fashion
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Merge Sort
- Quick Sort
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- 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
- Merge two sorted linked lists
- Sum Tree
- Transform to Sum Tree
- 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
- Postorder traversal from given Inorder and Preorder traversals
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Run Length Encoding
- Largest subarray of 0's and 1's
- 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
- Max sum in the configuration
- Unique rows in boolean matrix
- Is Binary Tree Heap
- Match specific pattern
- Validate an IP Address
- Distinct occurrences
- Josephus problem
- Expression Tree
- Check if Linked List is Palindrome
- Generate Grey Code Sequences
- 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
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Sort a stack
- Print Common Nodes in BST
- 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
- Maximum path sum
- Full binary tree
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Construct BST from Postorder
- Merge Lists Alternatingly
- Vertical sum
- Check if Tree is Isomorphic
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Change of Key in BST
- Normal BST to Balanced BST
- Linked List Matrix
- Remove Half Nodes
- 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
- Delete middle element of a stack
- Vertical Width of a Binary Tree
- Find the Frequency
- Frequency Game
- Pairwise swap of nodes in LinkeList
- Reverse words in a given string
- Smallest window in a string containing all the characters of another string
- Anagram
- Wave Array
- Pattern Searching
- Print Pattern
- Search in a Rotated Array
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Palindrome numbers
- Maximize Toys
- Trailing zeroes in factorial
- Non Repeating Character
- Minimum number of Coins
- Sum of Middle Elements of two sorted arrays
- Count Occurences of Anagrams
- Reverse words in a given string
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Activity Selection
- Remove “b” and “ac” from a given string
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Two numbers with sum closest to zero
- Maximum value in a bitonic array
- Finding Position
- Next sparse binary number
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Count distinct pairs with difference k
- Column name from a given column number
- N meetings in one room
- Remove Duplicates
- Addition of submatrix
- Maximum sum increasing subsequence
- Array to BST
- Key Pair
- Maximum Difference
- Add Binary Strings
- Product array puzzle
- Reverse Bits
- Lucky Number
- Reach the Nth point
- Subarray with given sum
- Leaders in an array
- Swap all odd and even bits
- Count number of hops
- Inorder Traversal and BST
- Reach a given score
- Next in Series
- Overlapping rectangles
- Possible paths
- Minimum element in a sorted and rotated array
- Search in a matrix
- Number Of Open Doors
- Day of the week
- Number of 1's in smallest repunits
- Chinky and diamonds
- Shop in Candy Store
- Largest number possible
- Generate binary string
- Count the Zeros
- 0 - 1 Knapsack Problem
- Longest Common Increasing Subsequence
- Trail of ones
- Valid Substring
- Cutted Segments
- Smallest number subset
- Game of Death in a circle
- Power of Numbers
- Final Destination
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- Maximize Dot Product
- Finding the numbers
- Minimum Energy
- Min Number of Flips
- Min sum formed by digits
- Chocolate Distribution Problem
- Binary Tree K level sum
- Knapsack with Duplicate Items
- Flood fill Algorithm
- Decode the pattern
- Longest K unique characters substring
- Roman Number to Integer
- Decode the string
- Smallest subarray with sum greater than x
- Game of XOR
- Find largest word in dictionary
- Find all pairs with a given sum
- Check if frequencies can be equal
- Shortest distance in infinite tree
- Largest zigzag sequence
- Meta Strings
- Excel Sheet | Part - 2
- Find the string in grid
- Largest Fibonacci Subsequence
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Common elements
- Rod Cutting
- Sequence of Sequence
- Transitive closure of a Graph
- Array Subset of another array
- First negative integer in every window of size k
- Merge two binary Max heaps
- Get Minimum Squares
- Group Anagrams Together
- Carry counter
- Count the elements
- Second most repeated string in a sequence
- Count all possible paths from top left to bottom right
- Shortest Common Supersequence
- Number of Groups
- Swapping pairs make sum equal
- Toppers Of Class
- String Ignorance
- Count of strings that can be formed using a, b and c under given constraints
- Nth item through sum
- String comparison
- Minimum indexed character
- Stickler Thief
- Maximum Product Cutting
- Find Last Digit Of a^b for Large Numbers
- Sum of Lengths of Non-Overlapping SubArrays
- Sum of two large numbers
- Check if a Integer is power of 8 or not
- Prime number of set bits
- Numbers containing 1, 2 and 3
- Non-Repeating Element
- Longest common prefix
- Nearest multiple of 10
- Check if array contains contiguous integers with duplicates allowed
- Maximum height of the staircase
- Winner of an election
- Ease the Array
- C++ Matrix Rotation by 180 degree
- Print Binary Tree levels in sorted order
- Arya's Long String
- Find the closest pair from two arrays
- Print Bracket Number
- Cutting Binary String
- Save Ironman

- Given a linked list, reverse alternate nodes and append at the end
- Reverse a Linked List in groups of given size.
- 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
- 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
- The Celebrity Problem
- Topological sort
- Print a Binary Tree in Vertical Order
- Merge K sorted linked lists
- Find the number of islands
- Get minimum element from stack
- Serialize and Deserialize a Binary Tree
- Circular tour
- Wildcard Pattern Matching
- Max rectangle
- Make Binary Tree From Linked List
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- 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
- LRU Cache
- Box Stacking
- Multiply two strings
- Minimum Swaps to Sort
- Rat in a Maze Problem
- Bipartite Graph
- 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
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- k-th smallest element in BST
- Polynomial Addition
- Binary Tree to CDLL
- Find a pair with given target in BST
- Occurences of 2 as a digit
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct tree from Inorder and LevelOrder
- Node at distance
- Leaves to DLL
- Right Sibling in Binary Tree
- Construct Tree from Preorder Traversal
- Count Number of SubTrees having given Sum
- C++ Friend function
- C++ Generic sort
- Swap Kth nodes from ends
- Smallest Positive missing number
- Trapping Rain Water
- Unique BST's
- Unit Area of largest region of 1's
- Longest consecutive subsequence
- Count ways to N'th Stair(Order does not matter)
- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Complement
- Rank The Permutations
- Excel Sheet | Part - 1
- Maximum Sub Array
- Print Diagonally
- Overlapping Intervals
- Maximum Index
- 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)
- Egg Dropping Puzzle
- Count of n digit numbers whose sum of digits equals to given sum
- 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
- Path in Matrix
- Trapping Rain Water
- String formation from substring
- Sum of bit differences
- Subset Sum Problem
- Maximize The Array
- Factorials of large numbers
- Number of Coins
- Minimum Platforms
- Number following a pattern
- 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 Array Alternately
- Relative Sorting
- 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
- Inversion of array
- Preorder to Postorder
- Length of the longest substring
- Longest consecutive subsequence
- Largest subsquare surrounded by ‘X’
- Stock span problem
- Subsequence matching
- Handshakes
- Number to words
- Palindromic Array
- Betting game
- Unique partitions
- Is Binary Number Multiple of 3
- Possible groups
- Card Rotation
- Longest Arithmetic Progression
- Max possible amount
- Bleak Numbers
- Super Primes
- Number of pairs
- Coin Piles
- Maximum XOR subset
- Maximum Profit
- Digit multiplier
- Circle of strings
- Largest number in K swaps
- Minimize the heights
- Next larger element
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Distinct Transformations
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Divisible by 8
- Longest Common Substring
- Rotate and delete
- Hamiltonian Path
- Count the Number of Full Binary Trees
- Snake and Ladder Problem
- Recursively remove all adjacent duplicates
- Shortest Source to Destination Path
- Trie | (Insert and Search)
- Replace O's with X's
- Knight Walk
- Find all four sum numbers
- Word Boggle
- Max absolute difference
- Distance of nearest cell having 1
- Find whether path exist
- 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
- Count subsequences of type a^i b^j c^k
- Stepping Numbers
- K
^{th}largest element in a stream - Water Overflow
- Zero Sum Subarrays
- Magnet Array Problem
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Floyd Warshall
- Nearly Sorted Algorithm
- Infix to Postfix
- Geek collects the balls
- Largest Sum Subarray of Size at least K
- Find minimum s-t cut in a flow network
- Smallest Positive missing number
- Longest Bitonic subsequence
- Mobile numeric keypad
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Array Pair Sum Divisibility Problem
- Top k numbers in a stream
- Page Faults in LRU
- Firing employees
- Min cut Square
- Rotten Oranges
- Probability of Knight
- Longest Common Prefix in an Array
- Steps by Knight
- Row with minimum number of 1's
- Matrix Chain Multiplication
- Maximum Tip Calculator
- Maximum GCD Pair
- Lazy Pasha
- Subarrays with equal 1s and 0s
- Longest Sub-Array with Sum K
- Geek and Strings
- Container with most water
- The Painter's Partition Problem
- Optimal Strategy For A Game

- Reorder List
- Binary Tree to DLL
- Alien Dictionary
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree
- Solve the Sudoku
- Minimum Points To Reach Destination
- Minimum sum partition
- Maximum of minimum for every window size
- Merge Without Extra Space
- Next Smallest Palindrome
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- Allocate minimum number of pages
- A Simple Fraction
- Ugly Numbers
- Number Formation
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - Part 2
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Strongly connected component (Tarjans's Algo)
- Find median in a stream
- Travelling Salesman Problem
- Max Circular Subarray Sum
- Distinct palindromic substrings
- Convert to Strictly increasing array
- Phone directory
- Count the subarrays having product less than k
- Queries on a Matrix
- Adventure in a Maze
- Doctor Strange