Name

Akshay Kumar Singh

Rank in Institute

#14

Campus Ambassador

Overall Coding Score: 936

Monthly Coding Score: 340

Weekly Coding Score: 78

- Shortest path from 1 to n
- Permutations of a given string
- Sum of dependencies in a graph
- Ishaan Loves Chocolates
- Count nodes of linked list
- Height of Binary Tree
- Implement stack using array
- Minimum element in BST
- Linked List Length Even or Odd?
- Identical Linked Lists
- Find the Sum of Last N nodes of the Linked List
- Maximum in Struct Array

- Frequencies of Limited Range Array Elements
- Maximum Gap
- Search in a Rotated Array
- Rectangles in N*N Board
- Squares in N*N Chessboard
- Maximize Toys
- Count Occurences of Anagrams
- Reverse words in a given string
- Remove all duplicates from a given string
- Remove “b” and “ac” from a given string
- Sort an array of 0s, 1s and 2s
- Maximum value in a bitonic array
- Finding Position
- Segregate even and odd nodes in a Linked List
- Element that appears once where every element occurs twice
- N meetings in one room
- Addition of submatrix
- Array to BST
- Facing the sun
- Product array puzzle
- Reverse Bits
- Count Smaller elements
- Reach the Nth point
- Swap all odd and even bits
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Triplet Sum in Array
- Possible paths
- Shop in Candy Store
- Count the Zeros
- Tom and Jerry
- Ordering of strings
- Element appearing once
- Deficient Number
- Count Pairs in an Array
- Min sum formed by digits
- 1[0]1 Pattern Count
- Reverse Coding
- Flood fill Algorithm
- Decode the pattern
- Maximum no of 1's row
- Game of XOR
- Minimum Operations
- Largest Fibonacci Subsequence
- Evaluation of Postfix Expression
- Element with left side smaller and right side greater
- Transitive closure of a Graph
- Array Subset of another array
- Karatsuba Algorithm
- Count the paths
- Paths to reach origin
- Group Anagrams Together
- Find Pair Given Difference
- Second most repeated string in a sequence
- Count all possible paths from top left to bottom right
- Shortest Common Supersequence
- Rearrange a string
- Number of Groups
- Count of strings that can be formed using a, b and c under given constraints
- Minimum indexed character
- Sum of Lengths of Non-Overlapping SubArrays
- Roof Top
- Pairs which are Divisible by 4
- Find winner of the Game of Nim
- Arya and The Great War
- Check if array contains contiguous integers with duplicates allowed
- Maximum height of the staircase
- Swap every two bits in bytes
- Print Bracket Number
- The Even Array
- Minimum changes to make all substrings distinct
- Eulerian Path in an Undirected Graph
- Print adjacency list
- 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
- Detect Loop in linked list
- Rearrange linked list in-place
- Remove duplicates from an unsorted linked list
- Reverse a Doubly Linked List
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Maximum Width of Tree
- Diameter of Binary 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
- Transform to Sum Tree
- Find Transition Point
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- 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
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- 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
- Is Binary Tree Heap
- Josephus problem
- Expression Tree
- Check if Linked List is Palindrome
- Generate Grey Code Sequences
- 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
- Level order traversal
- 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
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Root to Leaf Paths
- Perfect Binary Tree
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- XOR of a given range
- Full binary tree
- Modify Linked List-1
- Symmetric Tree
- Vertical sum
- Count Pairs whose sum is equal to X
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Linked List Matrix
- Reverse First K elements of Queue
- Sum of Leaf Nodes
- Brothers From Different Roots
- Sum of the Longest Bloodline of a Tree
- Check if two Nodes are Cousins
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Rotate doubly Linked List
- Matrix Interchange
- Print adjacency list
- Winner of an election
- Reverse words in a given string

- Kadane's Algorithm
- Find Missing And Repeating
- Overlapping Intervals
- Maximum Index
- Next Permutation
- Parenthesis Checker
- Longest Common Subsequence
- Count ways to N'th Stair(Order does not matter)
- Maximum Rectangular Area in a Histogram
- 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
- Number following a pattern
- Find Prime numbers in a range
- Stock buy and sell
- Largest Number formed from an Array
- Longest Palindrome in a String
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Relative Sorting
- Maximum of all subarrays of size k
- Row with max 1s
- Boolean Matrix Problem
- Count Integral Points
- Sorting Elements of an Array by Frequency
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Number of ways
- Minimum Cost of ropes
- Sum of Query II
- Form a palindrome
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Stock span problem
- Convert an array to reduced form
- Subsequence matching
- Palindromic Array
- Betting game
- Is Binary Number Multiple of 3
- Possible groups
- Search Pattern
- Nodes at even distance
- Build the smallest
- X Total Shapes
- Unique BST's
- Longest Prefix Suffix
- Kth smallest element
- Divisible by 8
- Longest Common Substring
- Count Palindrome Sub-Strings of a String
- Check if a string is repetition of its substring of k-length
- Recursively remove all adjacent duplicates
- Trie | (Insert and Search)
- Partition a number into two divisible parts
- Print leaf nodes from preorder traversal of BST
- 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
- K
^{th}largest element in a stream - Zero Sum Subarrays
- Magnet Array Problem
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Nearly Sorted Algorithm
- Smallest Absolute Difference
- Largest Sum Subarray of Size at least K
- Smallest Positive missing number
- Maximum Intervals Overlap
- Array Pair Sum Divisibility Problem
- Job Sequencing Problem
- Top k numbers in a stream
- Rotten Oranges
- LCS of three strings
- Longest Common Prefix in an Array
- Alternate Vowel and Consonant String
- Count divisors of product of array elements
- Print N-bit binary numbers having more 1’s than 0’s
- The Tiny Miny
- Save Gotham!
- 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
- 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
- Flattening a Linked List
- Delete a node from BST
- Min distance between two given nodes of a Binary Tree
- The Celebrity Problem
- Topological sort
- Find the number of islands
- Get minimum element from stack
- Circular tour
- 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
- Interleaved Strings
- Minimum Swaps to Sort
- Rat in a Maze Problem
- Number of root to leaf paths
- Find the Closest Element in BST
- Delete keys in a Linked list
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Top View of Binary Tree
- Smallest range in K lists
- k-th smallest element in BST
- Euler circuit and Path
- Find a pair with given target in BST
- Occurences of 2 as a digit
- Leftmost and rightmost nodes of binary tree
- Pairs violating BST property
- Leaves to DLL
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Smallest Positive missing number
- 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