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Profile
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Articles
people_outline
Campus Ambassadors
Uncover Diverse Options in Colleges and Companies
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codebush
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191
Rank
Current POTD Streak
STREAK
00
/969
days
Institution
Indian Institute of Information Technology, Allahabad (IIIT Allahabad)
Language Used
C++, Python, C
Overall Coding Score
1033
Total Problem Solved
500
Monthly Coding Score
_ _
Contributor
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
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How Badges Work
Course Attended
Contest Attended
SCHOOL (4)
BASIC (30)
EASY (303)
MEDIUM (152)
HARD (11)
Remove Spaces
Reverse an Array
Palindrome
Sum of Digit is Pallindrome or not
Triplet Family
Finger Game
Rotating an Array
Check if a number is power of another number
Digits in a set
Thief trying to escape
Count Leaves in Binary Tree
Power of 2
Size of Binary Tree
Inorder Traversal
Preorder Traversal
Postorder Traversal
Sum of distinct elements
Searching an element in a sorted array
Replace all 0's with 5
Binary Search
Find the nth number in the sequence
Long Long Decimal
Binary Addition of 1
Compare two Large Numbers
Greater on right side
Segregate Even and Odd numbers
Frobenius coin problem
Finding Position
Doubling the value
Strong Numbers
2's Complement
Repetitive Addition Of Digits
GCD of Array
Remove Consecutive Characters
Reverse a linked list
K distance from root
BBT counter
Count the triplets
Sum of dependencies in a graph
Min Manipulations to make Strings Anagram
Special Stack
Find duplicates in an array
Count all possible paths from top left to bottom right
Minimum element in a sorted and rotated array
Maximum Gap
Kth distance
Finding middle element in a linked list
Reverse words in a given string
Day of the week
Does array represent Heap
Number of 1 Bits
Lowest Common Ancestor in a BST
Right View of Binary Tree
Left View of Binary Tree
Symmetric Tree
Level order traversal
Root to leaf paths sum
Binary Tree to BST
Matrix Game - 1
Find the element that appears once in sorted array
Twice Counter
Check if string is rotated by two places
XOR Linked List
Check for BST
Missing number in array
Selection Sort
Bubble Sort
Determine if Two Trees are Identical
Height of Binary Tree
Postorder traversal from given Inorder and Preorder traversals
Root to leaf path sum
BFS of graph
Insert a node in a BST
DFS of Graph
Reverse Level Order Traversal
Find Transition Point
Level order traversal in spiral form
Stack using two queues
Queue using two Stacks
Intersection of two sorted Linked lists
Remove all duplicates from a given string
Remove duplicates from an unsorted linked list
Split a Circular Linked List into two halves
Linked List in Zig-Zag fashion
Transform to Sum Tree
Decimal Equivalent of Binary Linked List
Delete Middle of Linked List
Reverse a Doubly Linked List
Nth node from end of linked list
Check for Balanced Tree
Delete without head pointer
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.
linked list of strings forms a palindrome
Compare two linked lists
Detect Loop in linked list
Occurence of an integer in a Linked List
Insertion Sort
Maximum Width of Tree
Siri and her new College
Numbers with same first and last digit
Palindrome Sentence
Largest zigzag sequence
Meta Strings
Shortest distance in infinite tree
Find all pairs with a given sum
Equal point in a string of brackets
Minimum Operations
Love For The Twins
Learn Geometry
Seeds of a number
Sharing is Caring
Rahul a Geek
Odd Game
Smallest subarray with sum greater than x
Max sum in sub-arrays
Next Greater Even Number
Find Nth root of M
The Nth Fibonnaci
Largest Product Pallindrome
Last two digit Fibonacci
Roman Number to Integer
Kth Prime Factor
Pair with greatest product in array
Save The Nation
Reverse Coding
Tom and String
Raju and coins
Find sum of divisors
Karan and Arjun
Sum of k smallest elements in BST
1[0]1 Pattern Count
Maximum Sum Bitonic Subsequence
Odd Even Problem
Maximum 0s between two immediate 1s
String Manipulation
Minimum Steps
Circular Prime Number
Move all negative elements to end
Min sum formed by digits
Min Subsets with Consecutive Numbers
Sphenic Number
Find (a^b)%m
Largest Even Number
Circle and Lattice Points
Find Maximum Sum Strictly Increasing Subarray
Mr. Binary
Special Factorial Number
Binary Tree K level sum
Exit Point in a Matrix
Maximum distance in a string
Kaprekar Number
Game of cells
Min Number of Flips
Max Length Removal
Modified Fibonacci
Euler Totient
Geometric Progression
Choose and Swap
Next Prime Palindrome
Time Difference
LCS with permutations
Happy Number
Left or Right Positioned Array
Letter Writer
Least Prime Factor
Equilibrium Point
Count Increasing Subsequences
Number of digits
Minimum Energy
Optimal walk
Sort by Set Bit Count
Find the Number
Minimum Notes Required
Maximize dot product
Diamond in a Bag
Poisioned Sweet
Product of two digit numbers
Gift distribution according to preference
Kth boom number
Max value
Class Average
RegEx matching
Buildings receiving sunlight
Examination Papers
Magic numbers
Max sum submatrix
Number of solutions
Largest number with given sum
Non Fibonacci Number
Collection of pens
Squares and divisibility
GCD and Fibonacci Numbers
Sachin's love for runs
Crack the series
Maximum value
Subtraction and two numbers
Change Bits
Recursively find sum of digits
Ball coloring
Left out candies
Ordering of strings
Perfect Numbers
Area of intersection of two circles
Punish the Students
Arithmetic Number
Nearest Power
Repeating GCD
Permutation divisibility
Divisible Numbers
Final Destination
Sum Pair closest to X
Pick Values
Arrange the Balls
Number of subsets and mean
Faithful Numbers
Cross character
Permutations and Sum
Count digits in a factorial
Fraction Trouble
Division Problem
Maximum average subarray
Number of Heads
Number of Factors of N!
Number that are not divisible
Number of ways to find two numbers
Minimum number of swaps needed
Lexicographically Previous Permutation
Greater power
Extract the Number from the String
K-Pangrams
Interesting Prime Numbers
Last Match
Maximum value K
Special array reversal
Panagram Checking
Tom and Jerry
Right most non zero digit
Left Most Digit of a product
Maximum Number of 1s
Frequencies of Limited Range Array Elements
Product Pair
Trail of ones
The Prime Twins
Pangram Strings
Count the Zeros
Missing element of AP
Number of 1's in smallest repunits
Factorial Pairs
Largest number possible
Shop in Candy Store
Single Number
Save Knights
Reach a given score
Distinct absolute array elements
Swap all odd and even bits
Trailing zeroes in factorial
Largest power of prime
Maximum Diamonds
Maximum Collatz sequence length
Value of polynomial
Count Multiples of Five
Minimum Value Assigned
Next in Series
Three Great Candidates
Cut rope to maximise product
Minimum Possible Fruits
AND operation
Copy Set Bits in Range
Cutting Rectangles
Where Am I ?
Number of Days
Discovering Atlantis
Inorder Traversal and BST
Type of input
Count number of hops
Overlapping Substrings
Facing the sun
Count numbers
Adjacents are not allowed
Reach the Nth point
Lucky Number
Swap bits
Reverse Bits
Multiply two polynomials
Product array puzzle
Key Pair
Make Number Odd
Convert array into Zig-Zag fashion
DELETED - Common elements in three arrays(error)
Triangular Number
Sum of two numbers represented as arrays
Adding One
Addition of submatrix
Remove Duplicates
Replace by X
Is Square
Longest Distinct characters in string
Element that appears once where every element occurs twice
Does robot moves circular
Next sparse binary number
Next greater number set digits
Bitonic Point
Finding Number
Amend The Sentence
Pairs with difference k
Equal Sum and Product
Remove b and ac from a given string
Check if a given string is a rotation of a palindrome
Move all zeroes to end of array
Count Substrings
Isomorphic Strings
Forming Rectangle
Anagram
First Repeating Element
Good Pairs
Distinct Substrings
Count Odd Factors
Minimum number of Coins
Exponentiation (Set 2)
Non Repeating Character
Maximize Toys
Magic Number
Subarray with least average
Palindrome numbers
Squares in N*N Chessboard
Rectangles in N*N Board
Rotation
Print Pattern
Pattern Searching
Pascal Triangle
Search in a matrix
Floor in a Sorted Array
Second Largest
Mirror Tree
It's Payday
Minimum Platforms
Max length chain
Maximum of all subarrays of size k
Boundary Traversal of binary tree
Bottom View of Binary Tree
Count the Reversals
Egg Dropping Puzzle
Longest Increasing Subsequence
Temple Offerings
Kadane's Algorithm
Find Indexes of a subarray with given sum
Rat in a Maze Problem - I
Sub-Array sum divisible by K
Stickler Thief
Reverse a Linked List in groups of given size
Bleak Numbers
Get minimum element from stack
Diameter of a Binary Tree
Maximum Difference
Sum of two elements with sum nearest to zero
Merge two sorted linked lists
Perfect Sum Problem
Permutations of a given string
Non Repeating Numbers
Merge Sort
Quick Sort
Connect Nodes at Same Level
Vertical Traversal of Binary Tree
Longest Common Substring
Excel Sheet | Part - 1
Number of Coins
Next Permutation
Stock buy and sell
Insert and Search in a Trie
Trie | (Delete)
Sort a stack
Delete a node from BST
Find the Closest Element in BST
Duplicate subtree in Binary Tree
Find Common Nodes in two BSTs
Foldable Binary Tree
K Sum Paths
Root to Leaf Paths
Construct Binary Tree from Parent Array
Leftmost and rightmost nodes of binary tree
Count Inversions
Pairs violating BST property
Check if subtree
Extreme nodes in alternate order
Count the nodes at distance K from leaf
Vertical sum
Check if Tree is Isomorphic
Kth largest element in a stream
Job Sequencing Problem
Sorting Elements of an Array by Frequency
Water Overflow
Diagonal Traversal of Binary Tree
Lowest Common Ancestor in a Binary Tree
Min distance between two given nodes of a Binary Tree
Construct Tree from Inorder & Preorder
Smallest Positive missing number
Rotten Oranges
Largest Sum Subarray of Size at least K
Min cut Square
Maximum Intervals Overlap
Sum Tree
Number of occurrence
Game of Chocolates
Max Sum without Adjacents
0 - 1 Knapsack Problem
Maximum Sum Subsequence of length k
Easy Query
Product of Primes
Rotate a Linked List
Rearrange a linked list
Merge 2 sorted linked list in reverse order
Sorted insert for circular linked list
Check if frequencies can be equal
Find largest word in dictionary
Game of XOR
Gold Mine Problem
Decode the string
Friends Pairing Problem
Longest K unique characters substring
Look and Say Pattern
Last non-zero digit in factorial
Smallest factorial number
Knapsack with Duplicate Items
Reverse each word in a given string
Recursively remove all adjacent duplicates
Max and Min Products
Collecting Trees
Flip Bits
Finding Profession
Pallindrome Patterns
Find the element that appears once
Permutation with Spaces
Nth digit in sequence
Count number of substrings
Possible paths
Fraction Trouble
Next Greater Element
Power Of Numbers
Find the Safe Position
Not a subset sum
Integral Points Inside Triangle
Digit multiplier
Valid Substring
Sub-Array Pairs
Skip the work
Find the number of subarrays having even sum
K closest elements
Longest Common Increasing Subsequence
Jumping Numbers
Fibonacci Sum
Number of pairs
Disarrangement of balls
Moving on grid
Rectangles in a Circle
Two Repeated Elements
Squares in Rectangle
Comment Removal
Filling Bucket
Mapped String
Special Number
Fun With Expresions
Stock span problem
Add Binary Strings
Arrange Balls
Array to BST
Maximum sum increasing subsequence
Row with max 1s
Let's Go Shopping!
Maximum Product Subarray
Column name from a given column number
Count distinct pairs with difference k
Segregate even and odd nodes in a Linked List
Water Collection
Coin Change
Possible Words From Phone Digits
Number of paths in a matrix with k coins
Equal Sum Partition
Sort an array of 0s, 1s and 2s
Spirally traversing a matrix
Majority Element
Activity Selection
Pythagorean Triplet
Count Occurences of Anagrams
Sum of Middle Elements of two sorted arrays
Large Factorial
Search in a Rotated Array
Numbers Game
The Painter's Partition Problem-II
Binary Tree to DLL
Maximum Path Sum between 2 Special Nodes
AVL Tree Insertion
Return two prime numbers
Palindromic Partitioning
Count Pairs in an Array
Number of distinct subsequences
Maximum XOR subset
Count Smaller elements
Merge Without Extra Space