- Count nodes of linked list
- Delete node in Doubly Linked List
- Bubble Sort
- Count Leaves in Binary Tree
- Selection Sort
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Square root
- Doubly linked list Insertion
- Convert to Roman No
- Implement strstr
- Search a node in BST
- Minimum distance between two numbers
- Find triplets with zero sum
- Minimum element in BST
- Anagram of String
- Circular Linked List Traversal
- Delete Alternate Nodes
- Maximum in Struct Array
- Insert in Middle of Linked List
- longest substring containing '1'
- Queue Designer
- Check whether K-th bit is set or not
- Count total set bits
- Bit Difference
- Power Using Recursion
- Binary String
- GCD of Array
- Power of 2
- Pythagorean Triplet
- Majority Element
- Shortest path from 1 to n
- Rotate Array
- Permutations of a given string
- Missing number in array
- Number of paths
- Segregate Even and Odd numbers
- Greater on right side
- Binary Array Sorting
- Intersection of two arrays
- Union of two arrays
- Convert array into Zig-Zag fashion
- k largest elements
- Check if a number is power of another number
- Find position of set bit
- Ways To Tile A Floor
- Generate Binary Numbers
- Smallest number
- Count the numbers
- Find the Odd Occurence
- Minimize string value
- Rotate by 90 degree
- Reverse array in groups
- Set Bits
- Count Squares
- Minimize the sum of product
- Reverse each word in a given string
- Squares in a Matrix
- Sum of dependencies in a graph
- Sort in specific order
- Check if two arrays are equal or not
- Find first repeated character
- 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
- Arranging the array
- Transpose of Matrix
- Uncommon characters
- Max Sum Subarray of size K
- Sort the Half Sorted
- Check set bits
- Set kth bit
- Print first n Fibonacci Numbers
- Odd to Even
- Minimum Distinct Ids
- Print Matrix in snake Pattern
- Anagram Palindrome
- Closest Number
- Boolean String Value
- Find k-th character in string
- Check if strings are rotations of each other or not
- Message Spreading
- Ishaan Loves Chocolates
- Height of Heap
- Tower of Hanoi

Name

Utkarsh

Institution

Rank in Institute

#5

Courses Attended

Campus Ambassador

Overall Coding Score: 1947

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
- Rotate a Linked List
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Rearrange a linked list
- Add 1 to a number represented as linked list
- Compare two linked lists
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Remove duplicates from an unsorted 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
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Print all nodes that don't have sibling
- Postorder traversal from given Inorder and Preorder traversals
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Max sum path in two arrays
- 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
- Unique rows in boolean matrix
- Remove every k'th node
- Leaf at same level
- Is Binary Tree Heap
- Match specific pattern
- Validate an IP Address
- Multiply two linked lists
- Distinct occurrences
- Sorted subsequence of size 3
- Josephus problem
- Expression Tree
- Points in Straight Line
- Maximum Difference
- Check if Linked List is Palindrome
- Print matrix in diagonal pattern
- Longest Consecutive Subsequence
- Generate Grey Code Sequences
- Check whether BST contains Dead End
- Kth largest element in BST
- Find duplicates in an array
- Count distinct elements in every window
- Check if two strings are k-anagrams or not
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Three way partitioning
- Sort a stack
- Longest consecutive sequence in Binary tree
- Print Common Nodes in BST
- Level order traversal
- Peak element
- Inorder Successor in BST
- Delete nodes greater than k
- Index Of an Extra Element
- Merge Sort for Linked List
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Split Singly Linked List Alternatingly
- Ancestors in Binary Tree
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Root to Leaf Paths
- Maximum path sum
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- Counting elements in two arrays
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- Full binary tree
- Modify Linked List-1
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Construct BST from Postorder
- Vertical sum
- Next Right Node
- Count Pairs whose sum is equal to X
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Depth of node
- Predecessor and Successor
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Change of Key in BST
- Median of BST
- Normal BST to Balanced BST
- Reverse First K elements of Queue
- Remove Half Nodes
- Height of Spiral Tree
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Nodes at Odd Levels
- Closest Neighbor in BST
- Brothers From Different Roots
- 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
- Move all zeros to the front of the linked list
- Delete middle element of a stack
- Vertical Width of a Binary Tree
- Rotate doubly Linked List
- Find the Frequency
- Get min at pop
- Min Heap implementation
- Hashing for pair - 1
- Hashing for pair - 2
- Mother Vertex
- Find first set bit
- Rightmost different bit
- Power Of Numbers
- Closet 0s 1s and 2s
- Reverse words in a given string
- Anagram
- Number of Unique Paths
- Wave Array
- Maximum Gap
- Pattern Searching
- Print Pattern
- Search in a Rotated Array
- Palindrome numbers
- Maximize Toys
- Trailing zeroes in factorial
- Non Repeating Character
- a^b(Set 2)
- Minimum number of Coins
- First Repeating Element
- Count Occurences of Anagrams
- Reverse words in a given string
- Count Substrings
- 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
- Next greater number set digits
- Finding Position
- Next sparse binary number
- Amount of Water
- Single Number
- Segregate even and odd nodes in a Linked List
- Does robot moves circular
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Count distinct pairs with difference k
- Is Square
- Column name from a given column number
- N meetings in one room
- Addition of submatrix
- Maximum sum increasing subsequence
- Array to BST
- Facing the sun
- Key Pair
- Maximum Difference
- Product array puzzle
- Multiply two polynomals
- Reverse Bits
- Reach the Nth point
- Subarray with given sum
- Leaders in an array
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Triplet Sum in Array
- Two Repeated Elements
- Reach a given score
- Minimum element in a sorted and rotated array
- Search in a matrix
- Day of the week
- Shop in Candy Store
- Largest number possible
- Count the Zeros
- 0 - 1 Knapsack Problem
- Pangram Strings
- Trail of ones
- Cutted Segments
- Maximum average subarray
- Game of Death in a circle
- Power of Numbers
- Largest number with given sum
- The Nth Fibonnaci
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- Max value
- Flip Bits
- Finding the numbers
- Sort by Set Bit Count
- Happy Number
- Min Number of Flips
- Deficient Number
- Min sum formed by digits
- Chocolate Distribution Problem
- Maximum Sum Bitonic Subsequence
- 1[0]1 Pattern Count
- Sum of k smallest elements in BST
- Reverse Coding
- Flood fill Algorithm
- Decode the pattern
- Longest K unique characters substring
- Roman Number to Integer
- Maximum no of 1's row
- Decode the string
- Next Greater Even Number
- Gold Mine Problem
- Smallest subarray with sum greater than x
- Find largest word in dictionary
- Minimum Operations
- Find all pairs with a given sum
- Meta Strings
- Find the string in grid
- Largest Fibonacci Subsequence
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- Fractional Knapsack
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Common elements
- Rod Cutting
- Subset with no pair sum divisible by K
- Element with left side smaller and right side greater
- Array Subset of another array
- First negative integer in every window of size k
- Paths to reach origin
- Subarray with 0 sum
- Group Anagrams Together
- Sum equals to Sum
- Find Pair Given Difference
- Count the elements
- Second most repeated string in a sequence
- Count all possible paths from top left to bottom right
- Minimum Deletions
- Shortest Common Supersequence
- Number of Groups
- Swapping pairs make sum equal
- Count the number of ways to tile the floor of size n x m using 1 x m size tiles
- Minimum number of deletions to make a sorted sequence
- Minimum number of deletions.
- Count of strings that can be formed using a, b and c under given constraints
- Maximum sum Problem
- Minimum indexed character
- Find number of times a string occurs as a subsequence
- Minimum Cost To Make Two Strings Identical
- Printing Maximum Sum Increasing Subsequence
- Longest Repeating Subsequence
- Stickler Thief
- Merging two unsorted arrays in sorted order
- Common Subsequence
- K-Ary Tree
- Boundary Elements of Matrix
- Count the triplets
- Star elements
- Special Numbers
- Prime number of set bits
- Pairs with Positive Negative values
- Numbers containing 1, 2 and 3
- Next Happy Number
- Non-Repeating Element
- Find if string is K-Palindrome or not
- Longest common prefix
- Find out the Team
- Nearest multiple of 10
- 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
- Counts Zeros Xor Pairs
- Count pairs Sum in matrices
- C++ Matrix Rotation by 180 degree
- Print Binary Tree levels in sorted order
- Longest substring with equal number of 0s and 1s
- Print Bracket Number
- Smallest greater elements in whole array
- Minimal moves to form a string
- Print adjacency list
- Pair with given sum in a sorted array

- 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
- 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
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Max length chain
- Largest BST
- Interleaved Strings
- LRU Cache
- Box Stacking
- Multiply two strings
- Minimum Swaps to Sort
- Strongly Connected Components (Kosaraju's Algo)
- Rat in a Maze Problem
- Bipartite Graph
- Number of root to leaf paths
- Find the Closest Element in BST
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Print Nodes having K leaves
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- Smallest range in K lists
- 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
- Populate Inorder Successor for all nodes
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Node at distance
- Mirror of a given node
- Pairs violating BST property
- Maximum path sum from any node
- Leaves to DLL
- Right Sibling in Binary Tree
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Path Count in Directed Graph
- C++ Friend function
- C++ Generic sort
- Swap Kth nodes from ends
- Add two numbers represented by Linked List
- Smallest Positive missing number
- Trapping Rain Water
- Stock buy and sell
- Check if array is sorted and rotated
- Kadane's Algorithm
- Unique BST's
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Subarrays with equal 1s and 0s
- Sorting Elements of an Array by Frequency
- Longest consecutive subsequence
- Combination Sum
- Subsets
- M-Coloring Problem
- 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
- 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
- Edit Distance
- Magic Triplets
- Maximum Rectangular Area in a Histogram
- Longest Span with same Sum in two Binary arrays
- Consecutive 1's not allowed
- Count of Subarrays
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- String formation from substring
- Case-specific Sorting of Strings
- Sum of bit differences
- Subset Sum Problem
- Maximize The Array
- Factorials of large numbers
- Number of Coins
- Minimum Platforms
- 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 Array Alternately
- Rearrange an array with O(1) extra space
- 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
- Smallest number on left
- Longest consecutive subsequence
- Stock span problem
- Convert an array to reduced form
- M-Coloring Problem
- Subsequence matching
- Handshakes
- Tic-Tac-Toe
- Palindromic Array
- Betting game
- Unique partitions
- Is Binary Number Multiple of 3
- Possible groups
- Preorder Traversal and BST
- Search Pattern
- Longest Arithmetic Progression
- Subsets with XOR value
- Max possible amount
- Bleak Numbers
- Number of pairs
- Maximum XOR subset
- Maximum Profit
- Circle of strings
- Largest number in K swaps
- Special Matrix
- Minimize the heights
- Next larger element
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Subsets
- Matchsticks game
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Rotate and delete
- Hamiltonian Path
- 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
- Print leaf nodes from preorder traversal of BST
- Distance of nearest cell having 1
- Is Sudoku Valid
- 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
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Floyd Warshall
- Huffman Encoding
- Nearly Sorted Algorithm
- Infix to Postfix
- Geek collects the balls
- Largest Sum Subarray of Size at least K
- Smallest Positive missing number
- Longest Bitonic subsequence
- Reverse Spiral Form of Matrix
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Perfect Sum Problem
- Array Pair Sum Divisibility Problem
- Job Sequencing Problem
- Top k numbers in a stream
- Page Faults in LRU
- Rotten Oranges
- Longest Common Prefix in an Array
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- In First But Second
- Row with minimum number of 1's
- Brackets in Matrix Chain Multiplication
- Matrix Chain Multiplication
- Maximum Tip Calculator
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Make Matrix Beautiful
- Longest Sub-Array with Sum K
- Sum of XOR of all pairs
- Geek and Strings
- Container with most water
- Save Gotham!
- The Painter's Partition Problem
- Lucky alive person in a circle
- Optimal Strategy For A Game

- QuickSort on Doubly Linked List
- Reorder List
- Binary Tree to DLL
- Maximum subset XOR
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree
- Max Circular Subarray Sum
- Solve the Sudoku
- Merge Without Extra Space
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- Allocate minimum number of pages
- Ugly Numbers
- N-Queen Problem
- Solve the Sudoku
- Find median in a stream
- Max Circular Subarray Sum
- Distinct palindromic substrings
- Phone directory