- Pythagorean Triplet
- Majority Element
- Permutations of a given string
- Missing number in array
- Number of paths
- Number is sparse or not
- Bit Difference
- Convert array into Zig-Zag fashion
- k largest elements
- Reverse array in groups
- Longest Consecutive 1's
- Minimize the sum of product
- Sum of dependencies in a graph
- Check if two arrays are equal or not
- Check if string is rotated by two places
- Find first set bit
- Find first repeated character
- Find the element that appears once in sorted array
- First element to occur k times
- Check whether K-th bit is set or not
- Uncommon characters
- Rightmost different bit
- Set kth bit
- Toggle bits given range
- Check if strings are rotations of each other or not
- Count Leaves in Binary Tree
- Height of Binary Tree
- Finding middle element in a linked list
- Implement Stack using Linked List
- Implement Queue using Linked List
- Implement Atoi
- Minimum element in BST
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List

Name

Vikesh kumar

Rank in Institute

#5

Courses Attended

Campus Ambassador

Overall Coding Score: 1491

Monthly Coding Score: 0

Weekly Coding Score: 0

- Anagram
- Wave Array
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Maximize Toys
- Non Repeating Character
- Minimum number of Coins
- Reverse words in 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
- Column name from a given column number
- N meetings in one room
- Maximum sum increasing subsequence
- Array to BST
- Key Pair
- Subarray with given sum
- Leaders in an array
- Swap all odd and even bits
- Count number of hops
- Inorder Traversal and BST
- Shop in Candy Store
- Largest number possible
- 0 - 1 Knapsack Problem
- Tom and Jerry
- Equilibrium point
- Finding the numbers
- Chocolate Distribution Problem
- Roman Number to Integer
- Find largest word in dictionary
- Minimum Operations
- Find all pairs with a given sum
- Check if frequencies can be equal
- Meta Strings
- Excel Sheet | Part - 2
- Element with left side smaller and right side greater
- Array Subset of another array
- Shortest Common Supersequence
- Swapping pairs make sum equal
- Count of strings that can be formed using a, b and c under given constraints
- Minimum indexed character
- Reverse 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.
- Add two numbers represented by linked lists
- Detect Loop in linked list
- Mirror Tree
- 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
- Queue using two Stacks
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- BFS of graph
- Determine if Two Trees are Identical
- Root to leaf path sum
- Lowest Common Ancestor in a BST
- Largest subarray with 0 sum
- Binary Tree to BST
- Remove every k'th node
- Josephus problem
- Kth largest element in BST
- Count distinct elements in every window
- Special Stack
- Sort a stack
- Linked List that is Sorted Alternatingly
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Vertical sum

- 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
- 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
- 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
- Maximize The Array
- Factorials of large numbers
- Minimum Platforms
- Number following a pattern
- Find Prime numbers in a range
- Stock buy and sell
- Largest Number formed from an Array
- Jumping Numbers
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Concatenation of Zig-Zag String in ‘n’ Rows
- 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
- Dyck Path
- 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
- Largest subsquare surrounded by ‘X’
- Maximum Sum Path in Two Arrays
- Stock span problem
- Convert an array to reduced form
- M-Coloring Problem
- Minimum steps to get desired array
- Subsequence matching
- Handshakes
- Tic-Tac-Toe
- Number to words
- Palindromic Array
- Betting game
- Unique partitions
- Is Binary Number Multiple of 3
- Possible groups
- Maximum Sum Subsequence of length k
- Preorder Traversal and BST
- Search Pattern
- Longest Arithmetic Progression
- Subsets with XOR value
- Max possible amount
- Bleak Numbers
- Maximum XOR subset
- Maximum Profit
- Digit multiplier
- Circle of strings
- Nodes at even distance
- Largest number in K swaps
- Minimize the heights
- Next larger element
- Taking 1 out of 3 consecutives
- X Total Shapes
- Total Decoding Messages
- Unique BST's
- Distinct Transformations
- Subsets
- Matchsticks game
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Divisible by 8
- Transform String
- 3 Divisors
- Maximum calorie
- Prime Factors and their Powers
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Check if a string is repetition of its substring of k-length
- Rotate and delete
- Negative weight cycle
- Hamiltonian Path
- 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)
- Replace O's with X's
- Partition a number into two divisible parts
- Knight Walk
- Word Boggle
- Form coils in a matrix
- 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
- 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
- Minimum number of steps to reach a given number.
- Floyd Warshall
- Infix to Postfix
- 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
- Pyramid form
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Minimum Time
- Word Wrap
- Perfect Sum Problem
- Array Pair Sum Divisibility Problem
- Job Sequencing Problem
- Top k numbers in a stream
- Page Faults in LRU
- Min cut Square
- N Digit numbers with digits in increasing order
- Rotten Oranges
- Mila and strings
- LCS of three strings
- Two water Jug problem
- Longest repeating and non-overlapping substring
- Longest Common Prefix in an Array
- Minimum cost to fill given weight in a bag
- Steps by Knight
- In First But Second
- Matrix Chain Multiplication
- Maximum Tip Calculator
- Next higher number in one swap
- Previous number in one swap
- Next higher palindromic number using the same set of digits
- Biconnected Graph
- Pizza Mania
- Count of Palindromic substrings in an Index range
- Fill the Tank
- Lazy Pasha
- Make Matrix Beautiful
- Longest Sub-Array with Sum K
- Beautiful SubSequence
- Save Winterfell
- Pass the semester
- Water Connection Problem
- The Painter's Partition Problem
- Shreyansh and his bits
- Maximize the sum of selected numbers from an array to make it empty
- Lucky alive person in a circle
- Possible paths between 2 vertices
- Optimal Strategy For A Game
- 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
- Connect Nodes at Same Level
- Clone a linked list with next and random pointer
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- 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
- Remove loop in Linked List
- Implementing Dijkstra | Set 1 (Adjacency Matrix)
- Max length chain
- Minimum Spanning Tree
- Interleaved Strings
- Sum of permutations
- LRU Cache
- Box Stacking
- Minimum Swaps to Sort
- Strongly Connected Components (Kosaraju's Algo)
- Rat in a Maze Problem
- Bipartite Graph
- Max sum subarray by removing at most one element
- 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
- Bridge Edge in Graph
- Find the missing no in string
- Smallest range in K lists
- k-th smallest element in BST
- Euler Circuit in a Directed Graph
- Euler circuit and Path
- Find a pair with given target in BST
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Mirror of a given node
- Pairs violating BST property
- Leaves to DLL
- Largest Independent Set Problem
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Path Count in Directed Graph
- Maximum sum of Non-adjacent nodes
- Unique BST's
- Longest consecutive subsequence
- Count ways to N'th Stair(Order does not matter)

- Minimum Points To Reach Destination
- Minimum sum partition
- Maximum of minimum for every window size
- Head to Tail ordering
- 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
- Ugly Numbers
- Largest rectangle of 1’s with swapping of columns allowed
- Path of greater than equal to k length
- Number Formation
- 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
- Find the Maximum Flow
- Max Circular Subarray Sum
- Minimum number of elements
- Distinct palindromic substrings
- Longest Zig-Zag Sub Sequence
- Convert to Strictly increasing array
- Phone directory
- Count the subarrays having product less than k
- Queries on a Matrix
- Bike Racing
- Doctor Strange
- Kill Captain America
- QuickSort on Doubly Linked List
- Reorder List
- Binary Tree to DLL
- Maximum subset XOR
- Alien Dictionary
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree