M
maddler
STREAK
79/1461
days
Longest streak/Global longest streak
Coding Score
1682
Problem Solved
647
Contest Rating
__
209 points
Contributor
209 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
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50k Point
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SCHOOL (4)
BASIC (81)
EASY (266)
MEDIUM (245)
HARD (51)
- Geek and his Marks
- Reach the Target ||
- Geek-onacci Number
- Digit Combination
- Valid String
- Contest Score
- Geek and Books
- Geek and Contest ||
- K Subarray Sum
- 3 Data structures
- Ticket Counter
- Geek and City
- Minimum XOR
- 3 - Numbers
- Reverse a linked list
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Delete in a Doubly Linked List
- Reverse a Doubly Linked List
- Selection Sort
- Insertion Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Maximum Width of Tree
- Delete without head pointer
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Middle of a Linked List
- Check If Circular Linked List
- Delete Middle of Linked List
- Transform to Sum Tree
- Remove Duplicates from a Sorted Linked List
- Stack using two queues
- Reverse Level Order Traversal
- DFS of Graph
- Stack using Linked List
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Root to leaf path sum
- Square Root
- Nodes without a Sibling
- Lowest Common Ancestor in a BST
- Binary Search
- Remove Duplicates Sorted Array
- Level Order Line by Line
- BST Keys in a Range
- Print all possible strings
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- Unique rows in boolean matrix
- Leaves at Same Level or Not
- Josephus problem
- Expression Tree
- Max distance between same elements
- Delete in a Singly Linked List
- Array Duplicates
- Max Level Sum in Binary Tree
- Three way partitioning
- Level order traversal
- Index of an Extra Element
- Intersection of Two Linked Lists
- Disjoint set (Union-Find)
- Insert in a Sorted List
- Level of a Node in Binary Tree
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- XOR of a given range
- Symmetric Tree
- Huffman Decoding-1
- Next Right Node
- Count Pairs whose sum is equal to X
- Depth of node
- Maximum Node Level
- Median of BST
- Find n/k th node in Linked list
- Linked List Matrix
- Reverse first K of a Queue
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Closest Neighbour in BST
- Sum of Leaf Nodes at Min Level
- C++ STL Priority Queue
- Move all zeros to the front of the linked list
- Delete Mid of a Stack
- Rotate doubly Linked List
- C++ Multi-level inheritance
- C++ Function overloading
- C++ complex number addition (operator overloading)
- C++ Template
- Controlled_Printing
- Coding with Operators
- Bridge of Stones
- Learn to Comment
- For Loop- primeCheck
- While loop- printTable
- Learning Macros
- Start Coding - Java
- The New Line - Java
- Data Types - Java
- Learn to Comment - Java
- Exists or Not?
- The Loner
- Count the Specials
- Xoring and Clearing - Java
- Swap values using References
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Cover the distance
- Play With Vectors
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Frequency in Queue
- Get min at pop
- Deque Implementations
- Strings Frequency
- Multiset Operations
- Multimap Operations
- Repetitive Printing - Python
- Split the input - Python
- If conditional statement- Python
- For loop - Python
- For Loop 2- Python
- Slicing in String - Python
- Repeat the Strings - Python
- Mean Finder
- Neighbour of 10
- sep and end in Print()
- First Set Bit
- Longest Consecutive 1's
- Swap odd and even bits
- Floor in a Sorted Array
- Print adjacency list
- Anagram
- Strings Rotations of Each Other
- Minimum indexed character
- Non Repeating Character
- Parenthesis Checker
- Minimum indexed character
- Minimum Cost of ropes
- N meetings in one room
- Largest number with given sum
- Reach a given score
- Count ways to N'th Stair
- First Repeating Element
- Union of Arrays with Duplicates
- Missing in Array
- Product array puzzle
- Search an element in sorted and rotated array
- Intersection of Arrays with Distinct
- Excel Sheet | Part - 2
- Max Value Permutation
- Count minimum right flips to set all values in an array
- Missing And Repeating
- Sort by Set Bit Count
- Professor and Parties
- Pairs which are Divisible by 4
- k sorted array
- Pairs with certain difference
- Common in 3 Sorted Arrays
- Sorted and Rotated Minimum
- Sum of elements between k1'th and k2'th smallest elements
- Move All Zeroes to End
- Minimize the sum of product
- Move all negative elements to end
- String Manipulation
- Count the triplets
- Bitonic Point
- Left most and right most index
- Single Number
- Palindrome Sentence
- Check if the number is balanced
- Remove Duplicates
- Twice Counter
- Check if array contains contiguous integers
- Reversing the equation
- Longest common prefix
- C++ Visible Numbers
- Convert an array to reduced form
- Largest Fibonacci Subsequence
- Special array reversal
- Min Manipulations to make Strings Anagram
- Counts Zeros Xor Pairs
- Cross the hurdles: The Game
- Segregate 0s and 1s
- Play With OR
- Hungry Pizza Lovers
- Distinct absolute array elements
- Length of longest subarray
- Merge two binary Max heaps
- Maximum sum of subarray less than or equal to x
- Four Elements
- Palindrome String
- Smallest greater elements in whole array
- Pair with given sum in a sorted array
- Easy string
- Lucas Number
- Encrypt the string - 2
- Replace a word
- Minimum Operations
- Adding Array Elements
- Number of 1 Bits
- Find the Highest number
- Midori and chocolates
- Reverse Bits
- Change Bits
- Set all the bits in given range of a number
- Maximum Sum Problem
- Shortest path from 1 to n
- Mighty Divisor
- Arrange the Balls
- Happy Number
- Right most non zero digit
- Break a number
- Numbers with same first and last digit
- Array's Game
- Non Fibonacci Number
- Maximize Toys
- C++ Exception Handling
- Grouping values
- Recamans sequence
- Largest sum of digits in all Divisors
- Geometric Progression
- Remainder of array multiplication
- Squares in N*N Chessboard
- Sum of K Primes
- Compare two fractions
- Trailing zeroes in factorial
- Form a number divisible by 3 using array digits
- Poisioned Sweet
- Woodall Number
- Circular Prime Number
- Juggler Sequence
- Tom and Jerry
- Water Balloons
- Summed Matrix
- Minimum Value Assigned
- Make Zeroes
- Beautiful Sequence
- Print Pattern
- Array to BST
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Plus One
- Reverse Bits
- Sum of two numbers without using arithmetic operators
- Minimum steps to make product equal to one
- Queue using stack
- Binary Search in forest
- Construction of a string
- Fair string
- Even Sum
- Again Permutation
- Assign Tasks
- Maximum Identical Bowls
- Police Station
- 7 Segment Display
- Nearly Sorted Algorithm
- Minimum Moves
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Rearrange a linked list
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Merge Sort
- Quick Sort
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Sum Tree
- Flattening a Linked List
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Absolute List Sorting
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Get Min from Stack
- Gas Station
- Extreme nodes in alternate order
- Kth smallest element in a Matrix
- Is Binary Tree Heap
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Interleaved Strings
- Sorted subsequence of size 3
- Implement Atoi
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze Problem - I
- Number of root to leaf paths
- Delete keys in a Linked list
- Merge two BST 's
- Count distinct elements in every window
- Trie | (Delete)
- Merge k Sorted Arrays
- Find triplets with zero sum
- Sort a stack
- Top View of Binary Tree
- Find Common Nodes in two BSTs
- Peak element
- Merge Sort for Linked List
- Union of Two Linked Lists
- Root to Leaf Paths
- Leftmost and rightmost nodes of binary tree
- Arrange Consonants and Vowels
- Maximum path sum from any node
- Children Sum in a Binary Tree
- Deletion and Reverse in Circular Linked List
- Normal BST to Balanced BST
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Count Number of SubTrees having given Sum
- C++ Generic sort
- Sum Pair
- Diagonal Sum
- Pattern Printer - CPP
- Count Students
- Nearest Power
- Doge
- Mother Vertex
- Count set bits
- Maximum AND Value
- Reverse array in groups
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Possible Words From Phone Digits
- Rearrange Array Alternately
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Two Repeated Elements
- Unique BST's
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Make Matrix Beautiful
- Spirally traversing a matrix
- Subarray with 0 sum
- Subarrays with equal 1s and 0s
- Longest Consecutive Subsequence
- Stock span problem
- Infix to Postfix
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Combination Sum
- Unique Subsets
- Minimum Jumps
- Stickler Thief
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Number of Unique Paths
- Sort according to an Array
- Allocate Minimum Pages
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Most frequent word in an array of strings
- Maximize The Cut Segments
- Print Anagrams Together
- Generate Parentheses
- Word Search
- Word Boggle
- Prerequisite Tasks
- Sort 0s, 1s and 2s
- Taking 1 out of 3 consecutives
- Pascal Triangle
- Maximize Number of 1's
- Count Occurences of Anagrams
- Single Among Doubles
- Pythagorean Triplet
- Pair Sum Closest to 0
- Print Binary Tree levels in sorted order
- Maximum Intervals Overlap
- Maximize The Array
- Row with max 1s
- Concatenation of Zig-Zag String in n Rows
- Nuts and Bolts Problem
- Count the Reversals
- Sum of two large numbers
- Factorials of large numbers
- Reverse each word in a given string
- Length of the longest substring
- Longest Common Substring
- Look and Say Pattern
- K-th element of two Arrays
- Triplets with Smaller Sum
- Rod Cutting
- Greater tower sum
- Pick Values
- First negative in every window of size k
- Number of palindromic strings
- Minimum sum
- Minimize the Heights II
- Valid Substring
- Permutations of a String
- CamelCase Pattern Matching
- Modified Game of Nim
- Coin Change (Count Ways)
- Sequence of Sequence
- String Subsequence
- Fibonacci Sum
- Smallest number
- Count ways to N'th Stair(Order does not matter)
- Minimum Cost To Make Two Strings Identical
- Knapsack with Duplicate Items
- Temple Offerings
- Count of sum of consecutives
- Maximum path sum in matrix
- Minimum steps to destination
- Special Keyboard
- Lucky alive person in a circle
- Money Distributions
- Matchsticks game
- Subset Sums
- Yes XOR No
- Number of paths
- Nth Natural Number
- Permutation with Spaces
- Bell Numbers
- Return two prime numbers
- Find nth root of m
- Sum of Query II
- Fact Digit Sum
- Game with String
- Fraction to Repeating Decimal
- Dudeney's Cow Problem
- Decode the string
- Preorder Traversal and BST
- Possible paths
- Segregate even and odd nodes in a Linked List
- Kth Largest in a Stream
- Snake and Ladder Problem
- Divide and Subtract Game
- 7 Segment Display
- Number of Palindromic paths in a Matrix
- Flood fill Algorithm
- Shortest Path between Cities
- Moving on grid
- Missing Point of a Parallelogram
- Number of minimum picks to get 'k' pairs of socks from a drawer
- Spiral Matrix
- Valid Pair Sum
- Dam of Candies
- Repeated String Match
- Ruling Pair
- Triplets in Sorted Linked List
- Restrictive Candy Crush
- Help Classmates
- Restricted Pacman
- Valentine Sum
- Lucy's Neighbours
- Project Manager
- Closest Similar Elements
- Iterative Inorder
- Preorder traversal (Iterative)
- Iterative Postorder
- Subset Sum Problem
- Longest Palindromic Substring
- All Palindromic Partitions
- 3 Sum Closest
- Gray Code
- Subarrays with sum K
- Remove BST keys outside given range
- Minimum XOR value pair
- Searching an element in a sorted array (Ternary Search)
- Open the gates
- Sort a 2D vector diagonally
- Rearrange characters
- Distribute N candies among K people
- Remove K Digits
- Maximum XOR of two numbers in an array
- Maximum sum leaf to root path
- Division without using multiplication, division and mod operator
- Remove all occurences of duplicates in a linked list
- Minimize the Heights I
- Subsets
- All Unique Permutations of an array
- Maximum Value
- Min Cost Climbing Stairs
- Overlapping Intervals
- Bitwise AND of the Array
- Cities and Teleporters
- Remove and Reverse
- Jumping Towers
- Rotate Array
- Size of Binary Tree
- Count Leaves in Binary Tree
- Queue Using Array
- Equal Sum and XOR
- Smallest divisible number
- Identical Linked Lists
- Modular Node
- Sum of Binary Tree
- Insert in Middle of Linked List
- Count Non-Leaf Nodes in Tree
- Alternates in an Array
- C++ Inheritance introduction
- C++ Call by reference
- Filter the weeds
- Volume of Cuboid
- Vector Common Elements
- Sort and Reverse Vector
- Stack and Queue Operations
- Banish the Commons
- Queue Push & Pop
- Start Coding - Python
- Space Seperated - Python
- Welcome aboard - Python
- Two digit Sum
- AweSum
- Check if a string is Isogram or not
- Most Frequent Character
- Sum of numbers in string
- Binary Array Sorting
- C++ Hello World
- Sort the Half Sorted
- Ishwar and his proposals
- Sort The Array
- Alternative Sorting
- Sum of alternate product
- Extract the integers
- Reverse a string with spaces intact
- Find element at a given Index
- Message decoding
- Largest Element in Array
- Rotate Array by One
- Ishaan Loves Chocolates
- Array Subset
- Count of smaller elements
- Min and Max in Array
- Red OR Green
- C++ if-else (Decision Making)
- C++ Input / Output
- Odd or Even
- Check for Power
- Set kth bit
- Vowel or Not
- Java Hello World
- Numbers having alternate bits
- XOR Count Zero and One
- House Robber
- Maximum Area
- Find N-th term in the series
- Factorial
- Sum of Digit is Palindrome or not
- Simple Interest
- Reverse digits
- Special Odd Series Sum
- Special Series Sum
- Binary number to decimal number
- Closest Number
- Common Divisors
- Java 1-d and 2-d Array
- Divide the number
- Sum of fifth powers of the first n natural numbers
- The dice problem
- G.F Series
- Pattern Printing
- Count Squares
- Matching Pair
- Repeated sum of digits
- Print the Kth Digit
- Smallest number with maximum and minimum divisor in an array
- Sum of product of x and y with floor(n/x) = y
- Sum of primes
- Max rectangle
- Distinct occurrences
- LRU Cache
- Box Stacking
- Maximum subset XOR
- Alien Dictionary
- Smallest range in K lists
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Huffman Decoding
- Make them One
- Prioritized Students
- String Permutations
- Trapping Rain Water
- Max Circular Subarray Sum
- Smallest window containing all characters of another string
- Histogram Max Rectangular Area
- Max of min for every window size
- Strongly connected component (Tarjans's Algo)
- Minimum Cost Path
- Word Ladder I
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Merge Without Extra Space
- The Painter's Partition Problem-II
- Ugly Numbers
- Search Pattern (KMP-Algorithm)
- Longest Prefix Suffix
- Circle of strings
- Print all LCS sequences
- Edit Distance
- Stock Buy and Sell – Max K Transactions Allowed
- Check Tree Traversal
- Matrix Chain Multiplication
- Bit Difference
- Longest valid Parentheses
- Bike Racing
- N-Queen Problem
- Geek collects the balls
- Huffman Encoding
- Water Connection Problem
- 132 Geeky Buildings
- Shortest Range In BST
- Elixir of Life
- Minimum Reductions
- Number of subsets with product less than k
- Maximum XOR subarray
- Word Break (Trie)
- Minimum operations to convert array A to B
- Word Ladder II
- Count the number of subarrays
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