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ashutosh44
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Java, C, C++, Python
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504
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367 points
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367 points
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SCHOOL (1)
BASIC (54)
EASY (153)
MEDIUM (249)
HARD (47)
- Replace by X
- Nearest Perfect Square
- Toggle The Middle
- K Sum
- XOR Pair
- Average of String
- Closest friends!
- Maximum Integer Value
- Geek-onacci Number
- Geek and New Job
- Reverse a linked list
- Pairwise swap elements of a linked list
- Remove duplicates from an unsorted linked list
- Delete in a Doubly Linked List
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- 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
- Left View of Binary Tree
- Find Transition Point
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Stack using Linked List
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Square Root
- Binary Search
- Largest subarray of 0's and 1's
- Level Order Line by Line
- Delete in a Singly Linked List
- Kth largest element in BST
- Array Duplicates
- Special Stack
- Three way partitioning
- Level order traversal
- Disjoint set (Union-Find)
- Insert in a Sorted List
- More than n/k Occurrences
- Max and min element in Binary Tree
- Reverse Using Stack
- XOR of a given range
- Count Pairs whose sum is equal to X
- Find length of Loop
- Find n/k th node in Linked list
- Queue Reversal
- Reverse first K of a Queue
- Sum of Left Leaf Nodes
- Move all zeros to the front of the linked list
- Delete Mid of a Stack
- Java Collections | Set 7 (LinkedList)
- Start Coding - Java
- Maximum Area Rectangle
- Sum of Big Integers
- BigInteger Multiply
- Find the Frequency
- Fibonacci Numbers - Bottom Up DP
- Factorial Of Number
- Digits In Factorial
- Mean And Median of Array
- Swap odd and even bits
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Count 1's in binary array
- Floor in a Sorted Array
- Print adjacency list
- Print Matrix in snake Pattern
- Transpose of Matrix
- Anagram
- Strings Rotations of Each Other
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum indexed character
- Generate Binary Numbers
- K largest elements
- N meetings in one room
- Count Total Digits in a Number
- Doubly Linked List Conversion
- Pattern searching
- Union of Arrays with Duplicates
- Missing in Array
- Intersection of Arrays with Distinct
- Missing And Repeating
- Subarrays with given sum
- Sort by Set Bit Count
- k sorted array
- Move All Zeroes to End
- Move all negative elements to end
- Maximum Sum Bitonic Subsequence
- Drive the car
- Rearrange a string
- Two Sum - Pair with Given Sum
- Number of occurrence
- Check if array is sorted
- Maximum difference Indexes
- Counts Zeros Xor Pairs
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- Hungry Pizza Lovers
- Maximum sum of increasing order elements from n arrays
- Count the Zeros
- Merge two binary Max heaps
- Palindrome String
- Maximum average subarray
- Smallest greater elements in whole array
- Pair with given sum in a sorted array
- Pattern Searching
- Shop in Candy Store
- Number of 1 Bits
- Midori and chocolates
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Minimum number of deletions to make a sorted sequence
- Shortest path from 1 to n
- Swap bits
- Maximize Toys
- Trailing zeroes in factorial
- K-Ary Tree
- Rearrange Geek and his Classmates
- Gadgets of Doraland
- Sum of two numbers without using arithmetic operators
- Search insert position of K in a sorted array
- Queue using stack
- Largest value in each level
- Minimum Difference in an Array
- First and last occurrences of x
- Geek and Snow Fighting
- Geek and Co-Prime Numbers
- Smallest window containing 0, 1 and 2
- Can Make Triangle
- Matrix Operations
- Triangle and Square
- Find Bots on Geeklandster
- Jumping Towers
- Prefix Distinct
- Smaller on Right
- The Conversion To One
- Get the Shadow
- Reverse alternate nodes in Link List
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add 1 to a Linked List Number
- Detect Loop in 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
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Add all greater values to every node in a BST
- Construct Binary Tree from Parent Array
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Maximum difference between node and its ancestor
- Range Minimum Query
- Two Stacks in an Array
- Binary Heap Operations
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Check if subtree
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze Problem - I
- Bipartite Graph
- Max sum subarray by removing at most one element
- Closest in BST
- Merge two BST 's
- Count distinct elements in every window
- Trie | (Delete)
- Merge k Sorted Arrays
- Bridge edge in a graph
- Sort a stack
- Top View of Binary Tree
- k-th Smallest in BST
- Merge Sort for Linked List
- Binary Tree to CDLL
- Pair Sum in BST
- Complete Binary Tree
- Foldable Binary Tree
- Construct Tree from Inorder & Preorder
- Count the nodes at distance K from leaf
- Vertical sum
- Predecessor and Successor
- Leaves to DLL
- Children Sum in a Binary Tree
- Convert Level Order Traversal to BST
- ZigZag Tree Traversal
- Count Number of SubTrees having given Sum
- Vertical Width of a Binary Tree
- Maximum sum of Non-adjacent nodes
- Rabin Karp - Pattern Searching
- Pair Sum in BST
- Maximum AND Value
- Tower Of Hanoi
- Smallest Positive Missing
- Possible Words From Phone Digits
- Rearrange Array Alternately
- Maximum Index
- Stock buy and sell
- Rotate Array
- Check if array is sorted and rotated
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Unique BST's
- Indexes of Subarray Sum
- Triplet Sum in Array
- Number of pairs
- Merge Without Extra Space
- Merge three sorted arrays
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Distance of nearest cell having 1
- Subarray with 0 sum
- Subarrays with equal 1s and 0s
- Sort Elements by Decreasing Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Lexicographic Rank Of A String
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Rat Maze With Multiple Jumps
- Minimum Jumps
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Equal Sum Partition
- Allocate Minimum Pages
- Preorder to BST
- Zero Sum Subarrays
- Find whether path exist
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Rotten Oranges
- Steps by Knight
- Most frequent word in an array of strings
- Count only Repeated
- Renaming Cities
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Excel Sheet | Part - 1
- Maximum Water Between Two Buildings
- Sort 0s, 1s and 2s
- Longest Span in two Binary Arrays
- Maximize Number of 1's
- Count Occurences of Anagrams
- Search in Rotated Sorted Array
- Maximum Product Subarray
- Longest Subarray with Sum K
- Count the Reversals
- Sum of two large numbers
- Max Sum without Adjacents
- Factorials of large numbers
- Length of the longest substring
- Remove leading zeros from an IP address
- k largest elements
- Longest substring with distinct characters
- K-th element of two Arrays
- K closest elements
- Smallest Absolute Difference
- Longest Palindromic Subsequence
- First negative in every window of size k
- Maximum possible sum
- Minimize the Heights II
- First and Last Occurrences
- Smaller on Left
- Previous number in one swap
- Unique Number II
- Modular Exponentiation
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Coin Change (Minimum Coins)
- Power Set
- Longest Bitonic subsequence
- Min Coin
- Handshakes
- Killing Spree
- Subset Sums
- Choose and Swap
- Return two prime numbers
- Sum of Query II
- Find Prime numbers in a range
- Next Permutation
- Rank The Permutations
- Longest Repeating Subsequence
- Is Sudoku Valid
- Stream First Non-repeating
- Segregate even and odd nodes in a Linked List
- Pairs of Non Coinciding Points
- 7 Segment Display
- Product of Primes
- Eulerian Path in an Undirected Graph
- Replace O's with X's
- Check Mirror in N-ary tree
- Special Matrix
- Biconnected Graph
- Negative weight cycle
- Flood fill Algorithm
- Maximum sum Rectangle
- Moving on grid
- Height Using Parent Array
- Police and Thieves
- Recursively Remove Adjacent Duplicates
- Theft at World Bank
- Coins of Geekland
- Transfiguration
- Spidey Sense
- Escape the Forbidden Forest
- Jump Game
- Iterative Inorder
- Preorder traversal (Iterative)
- Iterative Postorder
- Subset Sum Problem
- Search Pattern (Rabin-Karp Algorithm)
- Subarrays with sum K
- Partition a Linked List around a given value
- Coin Piles
- Clone a stack without using extra space
- Number of Provinces
- Prefix match with other strings
- Check if a String is Subsequence of Other
- Find duplicate rows in a binary matrix
- Insertion Sort for Singly Linked List
- Subsets
- Rank The Permutations
- Unique Number III
- Minimum times A has to be repeated such that B is a substring of it
- Bitwise AND of the Array
- Maximum number of events that can be attended
- Robots
- Hit most Balloons
- Concatenate Equal to Target
- Exactly one swap
- Maximum Winning score
- Compute Before Matrix
- Maximum selections
- LCP
- Next element with greater frequency
- Sum of nodes within k distance from target
- Minimum increment/decrement to make array non-Increasing
- Number Of Enclaves
- Score of Array
- Maximum Points
- Beautiful cities - I
- Kth Smallest Difference
- Rolling Hash
- Linked List Group Reverse
- Binary Tree to DLL
- Clone List with Next and Random
- Max rectangle
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Pattern Search KMP
- String Permutations
- Trapping Rain Water
- Max Circular Subarray Sum
- Histogram Max Rectangular Area
- Max of min for every window size
- Find median in a stream
- Solve the Sudoku
- Strongly connected component (Tarjans's Algo)
- Minimum Cost Path
- Median of Two sorted arrays
- Contiguous Elements XOR
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Distinct palindromic substrings
- Search Pattern (KMP-Algorithm)
- Largest rectangle of 1s with swapping of columns allowed
- Longest Prefix Suffix
- Edit Distance
- Palindromic Partitioning
- Next Happy Number
- Matrix Chain Multiplication
- Median in a row-wise sorted Matrix
- N-Queen Problem
- nCr mod M | Part 1
- Adventure in a Maze
- Closest Palindrome
- Articulation Point - II
- Optimal binary search tree
- Word Wrap
- Huffman Encoding
- Corona Vaccine
- Maximum XOR subarray
- Longest substring to form a Palindrome
- Palindrome Pairs
- Number of distinct words with K maximum contiguous vowels
- Shortest Unique prefix for every word
- Articulation Point - I
- Geek in a Maze
- Rotate Array
- Count Linked List Nodes
- Size of Binary Tree
- Postorder Traversal
- Implement stack using array
- Queue using Linked List
- Doubly linked list Insertion at given position
- Count zeros in a sorted matrix
- Preorder Traversal
- Sum Except First and Last
- Search a node in BST
- Peak element
- Linked List Insertion At End
- Minimum element in BST
- Anagram of String
- Alternates in an Array
- Who has the majority?
- Strongest Neighbour
- Array insert at index
- Array insert at end
- Absolute Value
- Convert Celsius To Fahrenheit
- Reverse array in groups
- Array Search
- Sorted Array Search
- Left Index
- Check if a string is Isogram or not
- Multiplication Under Modulo
- Minimum At Pop
- First n Fibonacci
- Sort The Array
- Value equal to index value
- Check for subsequence
- Segregate Even and Odd numbers
- Remove Spaces
- Repeated Character
- Largest Element in Array
- Rotate Array by One
- Game with nos
- Ishaan Loves Chocolates
- Min and Max in Array
- Red OR Green
- Convert String to LowerCase
- Delete alternate characters
- Find position of set bit
- Set kth bit
- Factor OR Multiple
- House Robber
- Sum Of Digits
- Binary number to decimal number
- Sum of elements in a matrix
- Jumpy Ball
- Matching Pair
- Sum of product of x and y with floor(n/x) = y
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