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mr_coder9933
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C++, Python, C, Java
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1682
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618
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shivam3145429 points
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SCHOOL (2)
BASIC (93)
EASY (256)
MEDIUM (236)
HARD (31)
- Sorting Elements of an Array by Frequency
- Nearly Sorted Algorithm
- Rotate a Linked List
- Add Number Linked Lists
- QuickSort on Doubly Linked List
- Count BST nodes that lie in a given range
- Merge Sort
- Quick Sort
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Merge two sorted linked lists
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Absolute List Sorting
- Topological sort
- Vertical Tree Traversal
- Find the number of islands
- Get Min from Stack
- Serialize and deserialize a binary tree
- Generate IP Addresses
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Count Palindromic Subsequences
- Multiply two strings
- Palindrome Linked List
- Bipartite Graph
- Closest in BST
- Pots of Gold Game
- Root to leaf paths sum
- Bridge edge in a graph
- Sort a stack
- Top View of Binary Tree
- k-th Smallest in BST
- Delete nodes greater than k
- Root to Leaf Paths
- Complete Binary Tree
- Counting elements in two arrays
- Foldable Binary Tree
- Construct Tree from Inorder & Preorder
- Predecessor and Successor
- C++ Friend function
- C++ Generic sort
- Cat and Hat
- Ceil in BST
- Count set bits
- Maximum AND Value
- Rotate and delete
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Smallest Positive missing number
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Spirally traversing a matrix
- Search in a sorted Matrix
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- K Sized Subarray Maximum
- Kth smallest element
- Fractional Knapsack
- Job Sequencing Problem
- Black and White
- M-Coloring Problem
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Allocate Minimum Pages
- Preorder to BST
- X Total Shapes
- Zero Sum Subarrays
- Kth Smallest
- Nth Catalan Number
- Rotten Oranges
- Most frequent word in an array of strings
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Top K Frequent in Array
- Prerequisite Tasks
- Sort 0s, 1s and 2s
- Paths to reach origin
- Complement
- Maximum Sub Array
- Large Factorial
- Maximize Number of 1's
- Count of Subarrays
- Single Among Doubles
- Sum of bit differences
- Count Full Binary Trees
- Efficiently sorting numbers in range from 0 to n^2 - 1
- Water Collection
- Alternate Vowel and Consonant String
- Add Binary Strings
- Sort the given array after applying the given equation
- Row with max 1s
- Form a palindrome
- Nuts and Bolts Problem
- Rotate a Matrix
- Longest Subarray with Sum K
- Sum of two large numbers
- Reverse each word in a given string
- The Tiny Miny
- k largest elements
- Sum of XOR of all pairs
- K-th element of two Arrays
- Rod Cutting
- Missing element of AP
- Maximize the sum of selected numbers from a sorted array to make it empty
- Build the smallest
- Minimize the Heights II
- Reaching the heights
- A difference of values and indexes
- Nine Divisors
- Find patterns
- Friends Pairing Problem
- Lexicographically smallest string
- Unique Number II
- 3 Divisors
- Coin Change (Count Ways)
- Power Of 2 and Subsequences
- Shreyansh and his bits
- Knapsack with Duplicate Items
- Longest Bitonic subsequence
- Count distinct pairs with difference k
- Array Pair Sum Divisibility Problem
- Magic Triplets
- Fill up buckets
- Killing Spree
- Unique partitions
- Yes XOR No
- Akku and Binary Numbers
- Number of paths
- Nth Natural Number
- Knight Walk
- Stepping Numbers
- LCM Triplet
- Fact Digit Sum
- Jumping Numbers
- A Game of LCM
- Fraction to Repeating Decimal
- Grouping Of Numbers
- Find the Safe Position
- Missing number in matrix
- Smaller on Left
- Geek and knots
- Filling Bucket
- Composite and Prime
- Decode the string
- Maximum Sub-String after at most K changes
- 2D Hopscotch
- Print leaf nodes from preorder traversal of BST
- Longest Perfect Piece
- Geek and Strings
- The Smurfs
- Satisfy the equation
- Replace O's with X's
- Two numbers with odd occurrences
- Find all distinct subset (or subsequence) sums
- Queries on a Matrix
- Floyd Warshall
- Base Equivalence
- Reverse Spiral Form of Matrix
- Geek and Number String
- Save Your Life
- Hamiltonian Path
- Jump Game
- Max Diff Elements and Indexes
- Iterative Inorder
- Triplets with sum with given range
- Preorder traversal (Iterative)
- Iterative Postorder
- Subset Sum Problem
- Bellman-Ford
- Player with max score
- Sort a 2D vector diagonally
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Number of Provinces
- Maximum sum leaf to root path
- Single valued subtree
- BST to max heap
- Flatten binary tree to linked list
- IPL 2021 - Match Day 2
- Unique Number III
- Course Schedule
- Enemy
- Levels Of Game
- Smallest sum contiguous subarray
- Array Removals
- Minimum Cost to cut a board into squares
- Stack Permutations
- Largest subtree sum in a tree
- Replace every element with the least greater element on its right
- Minimize connections
- Minimum Swaps
- Construct Binary Tree from String with bracket representation
- Check if all levels of two trees are anagrams or not
- Remove and Reverse
- Jumping Towers
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Minimum Multiplications to reach End
- Number Of Enclaves
- Eventual Safe States
- Alex Travelling
- Number Of Islands
- Merging Details
- Geekland Colosseum
- Number of Ways to Arrive at Destination
- Path With Minimum Effort
- Cheapest Flights Within K Stops
- Maximum Stone Removal
- Shortest path in Directed Acyclic Graph
- Sum of Beauty of All Substrings
- Asteroid Collision
- Aggressive Cows
- Shortest Path in Weighted undirected graph
- Find minimum number of Laptops required
- Reorder List
- Binary Tree to DLL
- Box Stacking
- Partition array to k subsets
- Alien Dictionary
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree
- Trapping Rain Water
- Max Circular Subarray Sum
- Word Ladder I
- Burning Tree
- Minimum sum partition
- Number Formation
- Matrix Chain Multiplication
- Bit Difference
- Median in a row-wise sorted Matrix
- Phone directory
- Articulation Point - II
- Huffman Encoding
- Smallest Positive Integer that can not be represented as Sum
- Minimum X (xor) A
- Count occurrences of a given word in a 2-d array
- Word Ladder II
- Split Array Largest Sum
- Shortest Path by Removing K walls
- Articulation Point - I
- Min Chars to Add for Palindrome
- Minimum time to fulfil all orders
- Navigate Island Country
- Maximum Connected group
- MaxSkill
- Sahil love good scorer
- Reverse a linked list
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- Selection Sort
- Insertion Sort
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Maximum Width of Tree
- Delete without head pointer
- Height of Binary Tree
- Middle of a Linked List
- Left View of Binary Tree
- Find Transition Point
- Queue using two Stacks
- Stack using two queues
- DFS of Graph
- Stack using Linked List
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Square Root
- Lowest Common Ancestor in a BST
- Binary Search
- Remove Duplicates Sorted Array
- Minimum Depth of a Binary Tree
- Equilibrium index of an array
- Josephus problem
- Expression Tree
- Max distance between same elements
- Count Occurrence of digit k
- Array Duplicates
- Inorder Successor in BST
- Index of an Extra Element
- Sum of leaf nodes in BST
- Counting Sort
- Reverse Using Stack
- XOR of a given range
- Symmetric Tree
- Next Right Node
- Count Pairs whose sum is equal to X
- Queue Reversal
- Reverse first K of a Queue
- Sum of Leaf Nodes
- Delete Mid of a Stack
- Product of an Array
- C++ Template
- The New Line
- Data Types
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- Bitwise Operators
- Even Odd
- For Loop- primeCheck
- While loop- printTable
- Learning Macros
- Step by Step Condition
- Start Coding - Java
- The New Line - Java
- Data Types - Java
- Taking input - Java
- Learn to Comment - Java
- nextLine and next
- Precise Format - Java
- logical Operators - Java
- Bitwise Operators - Java
- Even Odd - Java
- For Loop- primeCheck - Java
- While loop- printTable - Java
- Step by Step Condition - Java
- Swap the array elements
- Count the Specials
- Matrix Interchange
- Predict the Column
- Xoring and Clearing
- Consonants and Vowels check
- Even Subsets
- Almost Equal
- The Pattern Matcher
- Count Odd Even - Java
- The Pattern Matcher - Java
- Need Some Change - Java
- Count the Specials - Java
- Even Subsets - Java
- Matrix Interchange - Java
- Consonants and Vowels check - Java
- Predict the Column - Java
- Xoring and Clearing - Java
- Swap values using References
- 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
- BigInteger mod
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Student of the Year
- Java ArrayList Operation
- Reverse an Array
- Stack Operations
- Frequency in Queue
- Operations on PriorityQueue
- Get min at pop
- Deque Implementations
- Min Heap implementation
- Multiset Operations
- Repetitive Printing - Python
- Comment in Python
- Increment and Decrement - Python
- Bitwise Operators - Python
- If conditional statement- Python
- Mark Even and Odd - Python
- For loop - Python
- For Loop 2- Python
- While loop in Python
- Jumping through While - Python
- Slicing in String - Python
- Repeat the Strings - Python
- String Functions - II - Python
- String Functions I - Python
- sep and end in Print()
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Digits In Factorial
- GP Term
- Primality Test
- Longest Consecutive 1's
- Exactly 3 Divisors
- Power of 2
- Swap odd and even bits
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Intersection of two sorted arrays
- Transpose of Matrix
- Rotate by 90 degree
- Anagram
- Strings Rotations of Each Other
- Reverse Words
- Non Repeating Character
- Minimum indexed character
- K largest elements
- Minimum Cost of ropes
- N meetings in one room
- Reach a given score
- First Repeating Element
- Check Equal Arrays
- Find Immediate Smaller Than X
- Missing in Array
- Product array puzzle
- Search an element in sorted and rotated array
- Adding Ones
- Maximum no of 1's row
- Sum of elements between k1'th and k2'th smallest elements
- Next greater number set digits
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- Find Pair Given Difference
- Bitonic Point
- Left most and right most index
- Single Number
- Alternate Positive Negative
- Check if the number is balanced
- Remove Duplicates
- Nearest multiple of 10
- Facing the sun
- Count Substrings
- Twice Counter
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Rearrange to Make arr[i] = i
- Sort Unsorted Subarray
- Number of occurrence
- Convert an array to reduced form
- Find missing in second array
- First Repeated Character
- Counts Zeros Xor Pairs
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- Play With OR
- At Least K Occurrences
- Count the Zeros
- Fitting The Array
- Balanced string
- Is Binary Number Multiple of 3
- Divisibility by 8
- Adding Array Elements
- Number of 1 Bits
- Change Bits
- Swap two nibbles in a byte
- Toggle bits in the given range
- Party of Couples
- Shortest path from 1 to n
- Compute (a*b)%c
- The Bit Game
- Minimum number of Coins
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Smallest number with sum of digits as N and divisible by 10^N
- Adjacents are not allowed
- Maximize Toys
- Largest number possible
- Penalty Shooters
- Trailing zeroes in factorial
- Form a number divisible by 3 using array digits
- Right angled triangles
- Woodall Number
- Tom and Jerry
- Help Ishaan
- Sequence Fun
- Help the Old Man!!!
- Primes sum
- Print the pattern
- Chicks in a Zoo
- Maximum Sum LCM
- Check if it is possible to convert one string into another with given constraints
- Minimum Exchange
- Earthquake and the Paint Shop
- Count all possible paths from top left to bottom right
- Ball coloring
- Modified Numbers and Queries
- Sum of k smallest elements in BST
- Print Diagonally
- Plus One
- Sum of two numbers without using arithmetic operators
- Search insert position of K in a sorted array
- Binary Search in forest
- Maximum number of 2X2 squares
- Minimum Swaps
- License Key Formatting
- Find all possible paths from top to bottom
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Move Last Element to Front of a Linked List
- Find pairs with given sum in doubly linked list
- Subsequence Mex
- Again Permutation
- Assign Tasks
- Maximum Frequency
- Even subarray sum
- Police Station
- Rotate Array
- Sort String
- Count Linked List Nodes
- Size of Binary Tree
- Count Leaves in Binary Tree
- Postorder Traversal
- Implement stack using array
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Preorder Traversal
- C++ STL | Set 1 (vector)
- Sum Except First and Last
- Search a node in BST
- Equal Sum and XOR
- Smallest divisible number
- Peak element
- Minimum element in BST
- Is Linked List Length Even?
- Sum of Binary Tree
- Start Coding
- The Size of
- Logical Operators
- Count Odd and Even
- Sort and Reverse Vector
- Front to Back
- Stack designer
- Queue Push & Pop
- Start Coding - Python
- Space Seperated - Python
- Concatenating Strings - Python
- Taking input and typecasting - Python
- Taking input - Python
- Zero Converter - Python
- Who has the majority?
- Absolute Value
- Convert Celsius To Fahrenheit
- Quadratic Equation Roots
- Bit Difference
- Number is sparse or not
- Binary To Gray Code Conversion
- Reverse array in groups
- Array Search
- Binary Array Sorting
- Adding two matrices
- Most Frequent Character
- Addition Under Modulo
- First n Fibonacci
- C++ Hello World
- Searching in an Array
- Immediate Smaller Element
- Repeated Character
- Max and Min Product from 2 Arrays
- Last index of One
- Largest Element in Array
- Game with nos
- Exceptionally odd
- Rotating an Array
- Minimum number to form the sum even
- Min and Max in Array
- Multiply left and right array sum
- GCD of Array
- GCD of two numbers
- Find unique element
- 1s Complement
- Odd or Even
- One's Complement
- XOR of all elements
- The OR Gate
- The AND Gate
- Binary representation
- Check for Power
- Even Odd Sum
- Find position of set bit
- Set kth bit
- Smallest power of 2 greater than or equal to n
- XOR Count Zero and One
- Find the fine
- LCM And GCD
- Maximum Area
- Celsius to Fahrenheit Conversion
- Factorial
- Reverse digits
- Check if two given circles touch each other
- Ways To Tile A Floor
- Anshuman's Favourite Number
- Print the Kth Digit
- Unique Numbers
- Doctors Clinic
- Repetitive Addition Of Digits
- Maximum Handshakes
- Finding Position
- Squares Difference
- Max Min
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