- Print Linked List elements
- Count nodes of linked list
- Inorder Traversal
- 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
- Square root
- Binary Search
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Preorder Traversal
- Implement strstr
- Search a node in BST
- Implement Atoi
- Find Number of Numbers
- Minimum distance between two numbers
- Find triplets with zero sum
- Minimum element in BST
- Linked List Length Even or Odd?
- Delete Alternate Nodes
- Identical Linked Lists
- Find the Sum of Last N nodes of the Linked List
- Maximum in Struct Array
- Sum of Binary Tree
- Product of array elements
- C++ Call by reference
- Start Coding
- logical Operators
- Sort and Reverse Vector
- Front to Back
- Queue Designer
- Check if a string is Isogram or not
- Search an Element in an array
- Factorial
- Searching a number
- Power of 2
- Sort The Array
- Pythagorean Triplet
- Nth Fibonacci Number
- Majority Element
- Shortest path from 1 to n
- Count possible triangles
- Rotate Array
- Permutations of a given string
- Missing number in array
- Swap two nibbles in a byte
- Maximum product of two numbers
- Number of paths
- Greater on right side
- Immediate Smaller Element
- Binary Array Sorting
- Convert array into Zig-Zag fashion
- Remove character
- Number of occurrence
- k largest elements
- Minimum difference pair
- Sum of all prime numbers between 1 and N.
- Maximum money
- Find the Odd Occurence
- Angle between hour and minute hand
- Rotating an Array
- Reverse array in groups
- Set Bits
- Starting Point
- 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
- Find first set bit
- Index of first 1 in a sorted array of 0’s and 1’s
- Find the element that appears once in sorted array
- Last index of One
- Arranging the array
- Print an array in Pendulum Arrangement
- Transpose of Matrix
- Sorted matrix
- Swap and Maximize
- Rightmost different bit
- Max value after m range operation
- Set kth bit
- Print first n Fibonacci Numbers
- Remove repeated digits in a given number
- Anagram Palindrome
- Closest Number
- Positive and negative elements
- Anshuman's Favourite Number
- Find the fine
- Series X1
- Sum of f(a[i], a[j]) over all pairs in an array of n integers
- Inverse Permutation
- Ishaan's Internship
- Ishaan Loves Chocolates
- Difference series
- Multiply left and right array sum.
- Doctors Clinic

Name

Sumit Kumar

Institution

Rank in Institute

#14

Courses Attended

Campus Ambassador

Overall Coding Score: 1516

Monthly Coding Score: 0

Weekly Coding Score: 0

- Reverse a linked list
- Occurence of an integer in a Linked List
- Rotate a Linked List
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Add 1 to a number represented as linked list
- linked list of strings forms a palindrome
- Compare two linked lists
- Detect Loop in linked list
- Rearrange linked list in-place
- Split a Circular Linked List into two halves
- Reverse a Doubly Linked List
- Merge Sort
- K distance from root
- Mirror 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
- 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
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Determine if Two Trees are Identical
- Root to leaf path sum
- Print all nodes that don't have sibling
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Binary Heap Operations
- Largest subarray of 0's and 1's
- Level order traversal Line by Line
- Largest subarray with 0 sum
- Max sum in the configuration
- Equilibrium index of an array
- Remove every k'th node
- Josephus problem
- Expression Tree
- Maximum Difference
- Check if Linked List is Palindrome
- Max distance between same elements
- Delete a Node in Single Linked List
- Find duplicates in an array
- Count distinct elements in every window
- Max Level Sum in Binary Tree
- Special Stack
- Sort a stack
- Level order traversal
- Peak element
- Index Of an Extra Element
- Merge Sort for Linked List
- Convert Ternary Expression to Binary Tree
- Union of Two Linked Lists
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Counting Sort
- Counting elements in two arrays
- Reverse a string using Stack
- XOR of a given range
- Full binary tree
- Huffman Decoding
- Vertical sum
- Count Pairs whose sum is equal to X
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Deletion and Reverse in Linked List
- Normal BST to Balanced BST
- Linked List Matrix
- Reverse First K elements of Queue
- Remove Half Nodes
- Sum of Leaf Nodes
- Brothers From Different Roots
- Check if two Nodes are Cousins
- Delete middle element of a stack
- Rotate doubly Linked List
- C++ Multi-level inheritance
- Java Collections | Set 7 (LinkedList)
- C++ complex number addition (operator overloading)
- C++ Template
- The New Line
- Data Types
- The Size of
- Taking input
- Learn to Comment
- Learning to be precise
- While loop- printTable
- Learning Macros
- Learn to Comment - Java
- Bitwise Operators - Java
- Even Odd - Java
- Count Odd Even
- Need Some Change
- Count the Specials
- Matrix Interchange
- Predict the Column
- Matrix Interchange - Java
- Xoring and Clearing - Java
- Magic in CPP
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Pair in Java
- Maximum Area Rectangle
- Sum of Big Integers
- BigInteger Multiply
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Student of the Year
- ArrayList Operation
- Stack Operations
- Queue Operations
- Get min at pop
- Deque Implementations
- Min Heap implementation
- Frequency Game
- Multiset Operations
- Multimap Operations
- Pair Sum Existence- Revisited
- Dictionary Usage - Java
- Dictionary Usage 2 - Java
- Pairwise swap of nodes in LinkeList
- Print adjacency list
- Winner of an election
- Pangram Checking
- Minimum indexed character
- Frequencies of Limited Range Array Elements
- Anagram
- Number of Unique Paths
- Wave Array
- Print Pattern
- Rotation
- Search in a Rotated Array
- Squares in N*N Chessboard
- Palindrome numbers
- Subarray with least average
- Magic Number
- Maximize Toys
- Trailing zeroes in factorial
- Non Repeating Character
- Sum of Middle Elements of two sorted arrays
- Good Pairs
- First Repeating Element
- Count Occurences of Anagrams
- Reverse words in a given string
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Finding Number
- Maximum value in a bitonic array
- Finding Position
- Single Number
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Maximum Product Subarray
- N meetings in one room
- Remove minimum elements
- Remove Duplicates
- Addition of submatrix
- Maximum sum increasing subsequence
- Facing the sun
- Triangular Number
- Key Pair
- Product array puzzle
- Multiply two polynomals
- Reverse Bits
- Count Smaller elements
- Subarray with given sum
- Count numbers
- Leaders in an array
- Swap all odd and even bits
- Equal to product
- Count pairs with given sum
- Where Am I ?
- Copy Set Bits in Range
- K closest elements
- Reach a given score
- Minimum element in a sorted and rotated array
- Search in a matrix
- Largest power of prime
- Chinky and diamonds
- Count the Zeros
- 0 - 1 Knapsack Problem
- Trail of ones
- Find the number of sub-arrays having even sum
- Valid Substring
- Count the Reversals
- Tom and Jerry
- Number of ways to find two numbers
- Smallest number subset
- Game of Death in a circle
- Perfect Numbers
- Ordering of strings
- Change Bits
- The Nth Fibonnaci
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Finding the numbers
- Minimum Energy
- Least Prime Factor
- Collecting Trees
- Game of cells
- Equal 0, 1 and 2
- Adding Ones
- Circle and Lattice Points
- Count Pairs in an Array
- Min sum formed by digits
- Min Subsets with Consecutive Numbers
- String Manipulation
- Chocolate Distribution Problem
- Exit Point in a Matrix
- Reverse Coding
- Decode the pattern
- Roman Number to Integer
- Maximum no of 1's row
- Drive the car
- Max sum in sub-arrays
- Smallest subarray with sum greater than x
- Love For The Twins
- Recaman’s sequence
- Minimum Operations
- Find all pairs with a given sum
- Excel Sheet | Part - 2
- Largest Fibonacci Subsequence
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Common elements
- Fill array with 1's
- Element with left side smaller and right side greater
- Element in a Series
- Array Subset of another array
- Karatsuba Algorithm
- First negative integer in every window of size k
- Sum of product of all pairs
- Four Elements
- Paths to reach origin
- Group Anagrams Together
- Number of divisors in a given range
- Count the elements
- Assign Mice Holes
- Large number division
- Mr Modulo and Pairs
- Minimum Number in a sorted rotated array
- Toppers Of Class
- Bitonic Generator Sort
- Nth item through sum
- Maximum sum Problem
- Minimum indexed character
- Compute (a*b)%c
- Merging two unsorted arrays in sorted order
- Transform the array
- Sum of Lengths of Non-Overlapping SubArrays
- Chocolate Station
- Boundary Elements of Matrix
- Sub-arrays with equal number of occurences
- Sum of two large numbers
- Required Rooms
- Pairs with Positive Negative values
- Numbers containing 1, 2 and 3
- Ana and Sweets
- Next Happy Number
- Pairs which are Divisible by 4
- Find winner of the Game of Nim
- Arya and The Great War
- Mystic Falls School
- 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
- Amicable Pair
- Counts Zeros Xor Pairs
- Easy string
- C++ Matrix Rotation by 180 degree
- Mysterious Series
- Akaash's Assignment
- Print all bitwise subsets of a number N
- Print Bracket Number
- Searching in an array where adjacent differ by at most k
- The Even Array
- The Modified String
- Minimum changes to make all substrings distinct
- Eulerian Path in an Undirected Graph
- Connell Sequence
- Save Ironman
- Penalty Shooters
- Print adjacency list

- 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
- 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
- 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
- Print a Binary Tree in Vertical Order
- Find the number of islands
- Get minimum element from stack
- Circular tour
- Max rectangle
- Clone a Binary Tree
- Remove loop in Linked List
- Max length chain
- Largest BST
- LRU Cache
- Multiply two strings
- Count of distinct substrings
- Delete keys in a Linked list
- Top View of Binary Tree
- k-th smallest element in BST
- Polynomial Addition
- Merge Sort on Doubly Linked List
- Binary Tree to CDLL
- Occurences of 2 as a digit
- Foldable Binary Tree
- Leaves to DLL
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- C++ Generic sort
- Operations on PriorityQueue
- Unique BST's
- Sorting Elements of an Array by Frequency
- 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
- 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
- Longest Even Length Substring
- Trapping Rain Water
- Case-specific Sorting of Strings
- Rank of Matrix
- Sum of bit differences
- Subset Sum Problem
- 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
- Jumping Numbers
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Black and White
- Maximum of all subarrays of size k
- 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
- 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
- Largest subsquare surrounded by ‘X’
- Maximum Sum Path in Two Arrays
- Stock span problem
- Convert an array to reduced form
- Minimum steps to get desired array
- Handshakes
- Number to words
- Palindromic Array
- Is Binary Number Multiple of 3
- Card Rotation
- Longest Arithmetic Progression
- Cost of Sweets
- Bleak Numbers
- Number of pairs
- Coin Piles
- Minimize the heights
- Next larger element
- Total Decoding Messages
- Unique BST's
- Matchsticks game
- Combination Sum - Part 2
- Longest Prefix Suffix
- Kth smallest element
- Sum of Subarrays
- Longest Common Substring
- Count Number
- Rotate and delete
- Minimums in Array
- Recursively remove all adjacent duplicates
- Trie | (Insert and Search)
- Find all four sum numbers
- Print leaf nodes from preorder traversal of BST
- Is Sudoku Valid
- Largest prime factor
- 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
- Nearly Sorted Algorithm
- Infix to Postfix
- Smallest Positive missing number
- Maximum Intervals Overlap
- Longest Common Prefix in an Array
- Smith Number
- Row with minimum number of 1's
- Numbers with alternative 1's
- Smallest Non-Zero Number
- Maximum Tip Calculator
- Killing Spree
- Make Matrix Beautiful
- Sick Pasha
- Santa Banta
- The Tiny Miny
- Sum of XOR of all pairs
- Pass the semester
- Container with most water
- Large Factorials
- Part of it.
- Lucky alive person in a circle
- Smaller on Left
- A difference of values and indexes
- Maximum Product of Increasing Subsequence of Size 3

- Reorder List
- Binary Tree to DLL
- Maximum subset XOR
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Merge Without Extra Space
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- A Simple Fraction
- Ugly Numbers
- nCr mod M | Part 1
- Longest valid Parentheses
- Solve the Sudoku
- Generalised Fibonacci numbers
- Max Circular Subarray Sum
- Similar expressions
- Count the subarrays having product less than k
- Closest Palindrome