Name

Arun Pundir

Rank in Institute

#1

Courses Attended

Campus Ambassador

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Overall Coding Score: 731

Monthly Coding Score: 627

Weekly Coding Score: 18

- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Height of Binary Tree
- Postorder Traversal
- Square root
- Preorder Traversal
- Implement Atoi
- Find triplets with zero sum
- Binary String
- Prime Number
- LCM And GCD
- GCD of Array
- Power of 2
- Series GP
- Pythagorean Triplet
- Majority Element
- Sieve of Eratosthenes
- Rotate Array
- Permutations of a given string
- Missing number in array
- Greater on right side
- Immediate Smaller Element
- Intersection of two arrays
- Union of two arrays
- Remove character
- Ways To Tile A Floor
- Generate Binary Numbers
- Reverse array in groups
- Set Bits
- Find first repeated character
- Last index of One
- Sum of numbers in string
- Sorted matrix
- Closest Number

- Reverse a linked list
- Occurence of an integer in 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
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- Merge Sort
- Quick Sort
- K distance from root
- Two Mirror Trees
- Maximum Width of Tree
- Diameter of Binary Tree
- Check for Balanced Tree
- Nth node from end of linked list
- Left View of Binary Tree
- Merge 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
- 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
- Lowest Common Ancestor in a BST
- Level order traversal Line by Line
- Print BST elements in given range
- Odd even level difference
- Binary Tree to BST
- Leaf at same level
- Expression Tree
- Check if Linked List is Palindrome
- 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
- Longest consecutive sequence in Binary tree
- Level order traversal
- Peak element
- Merge Sort for Linked List
- Ancestors in Binary Tree
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Maximum path sum
- Counting Sort
- Reverse a string using Stack
- Full binary tree
- Symmetric Tree
- Huffman Decoding
- Vertical sum
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Height of Spiral Tree
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Delete middle element of a stack
- Get min at pop
- The Modified String
- Reverse words in a given string
- Minimum indexed character
- Pangram Checking
- Anagram
- Search in a Rotated Array
- Non Repeating Character
- Sum of Middle Elements of two sorted arrays
- First Repeating Element
- Reverse words in a given string
- Count Substrings
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Remove “b” and “ac” from a given string
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Finding Number
- Next greater number set digits
- Finding Position
- Amount of Water
- Segregate even and odd nodes in a Linked List
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Remove Duplicates
- Addition of submatrix
- Array to BST
- Key Pair
- Maximum Difference
- Reverse Bits
- Reach the Nth point
- Subarray with given sum
- Adjacents are not allowed
- Leaders in an array
- Swap all odd and even bits
- Triplet Sum in Array
- Three Great Candidates
- Generate binary string
- Missing element of AP
- Count the Zeros
- Trail of ones
- Smallest number subset
- Final Destination
- Magic numbers
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- Euler Totient
- Chocolate Distribution Problem
- 1[0]1 Pattern Count
- Decode the pattern
- Roman Number to Integer
- Gold Mine Problem
- Find all pairs with a given sum
- Meta Strings
- Evaluation of Postfix Expression
- Element with left side smaller and right side greater
- Array Subset of another array
- First negative integer in every window of size k
- 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
- Count of strings that can be formed using a, b and c under given constraints
- Minimum indexed character
- Longest Repeating Subsequence
- Stickler Thief
- Count the triplets
- Numbers containing 1, 2 and 3
- Find winner of the Game of Nim
- Sum of all divisors from 1 to n
- Maximum distinct elements after removing K elements
- Maximum difference of zeros and ones in binary string
- Maximum height of the staircase
- Print Bracket Number

- 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
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Vertical Traversal of Binary Tree
- Serialize and Deserialize a Binary Tree
- Circular tour
- Make Binary Tree From Linked List
- Check if subtree
- Remove loop in Linked List
- Interleaved Strings
- LRU Cache
- Multiply two strings
- Find the Closest Element in BST
- Merge two BST 's
- Merge k Sorted Arrays
- Print Nodes having K leaves
- Top View of Binary Tree
- k-th smallest element in BST
- Binary Tree to CDLL
- Occurences of 2 as a digit
- Leftmost and rightmost nodes of binary tree
- Node at distance
- Maximum path sum from any node
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Maximum sum of Non-adjacent nodes
- Unique BST's
- 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)
- Kadane's Algorithm
- Sum Of Prime
- Print Diagonally
- Overlapping Intervals
- Maximum Index
- Equal Sum
- Next Permutation
- Longest Increasing Subsequence
- Parenthesis Checker
- Longest Common Subsequence
- nCr
- Maximum Rectangular Area in a Histogram
- Consecutive 1's not allowed
- Path in Matrix
- Trapping Rain Water
- Find Prime numbers in a range
- Stock buy and sell
- Relative Sorting
- Maximum of all subarrays of size k
- Boolean Matrix Problem
- Sorting Elements of an Array by Frequency
- Rotate a 2D array without using extra space
- Minimum Cost of ropes
- Inversion of array
- Preorder to Postorder
- Length of the longest substring
- Smallest number on left
- Stock span problem
- Convert an array to reduced form
- Palindromic Array
- Is Binary Number Multiple of 3
- Next larger element
- Total Decoding Messages
- Unique BST's
- Kth smallest element
- Longest Common Substring
- Recursively remove all adjacent duplicates
- Trie | (Insert and Search)
- First non-repeating character in a stream
- Zero Sum Subarrays
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Infix to Postfix
- Smallest Positive missing number
- Rotten Oranges
- Longest Common Prefix in an Array