josal
STREAK
64/1475
days
Longest streak/Global longest streak
Language Used
C++, C
Coding Score
1604
Problem Solved
460
Contest Rating
__
356 points
Contributor
356 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
0 submissions in current year
SCHOOL (0)
BASIC (30)
EASY (105)
MEDIUM (273)
HARD (52)
- 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
- QuickSort on Doubly Linked List
- Count BST nodes that lie in a given range
- Merge 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
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Find the number of islands
- Serialize and deserialize a binary tree
- Wildcard Pattern Matching
- Check if subtree
- Kth smallest element in a Matrix
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Interleaved Strings
- Sorted subsequence of size 3
- Count Palindromic Subsequences
- Minimum Swaps to Sort
- Implement Atoi
- Strongly Connected
- Rat in a Maze Problem - I
- Bipartite Graph
- Pots of Gold Game
- Merge k Sorted Arrays
- Bridge edge in a graph
- Find the missing no in string
- Top View of Binary Tree
- Level order traversal
- Peak element
- Delete nodes greater than k
- Merge Sort for Linked List
- Complete Binary Tree
- Construct expression tree
- Foldable Binary Tree
- Construct Tree from Inorder & Preorder
- Predecessor and Successor
- Leaves to DLL
- Children Sum in a Binary Tree
- ZigZag Tree Traversal
- Count Number of SubTrees having given Sum
- Maximum sum of Non-adjacent nodes
- Ceil in BST
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Possible Words From Phone Digits
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Count Inversions
- Indexes of Subarray Sum
- Triplet Sum in Array
- Merge Without Extra Space
- Spirally traversing a matrix
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Stock span problem
- Infix to Postfix
- K Sized Subarray Maximum
- Nearly sorted
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- M-Coloring Problem
- Minimum Jumps
- Stickler Thief
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Allocate Minimum Pages
- X Total Shapes
- Zero Sum Subarrays
- Kth Smallest
- Implement Trie
- Nth Catalan Number
- Steps by Knight
- Count subsequences of type a^i, b^j, c^k
- Maximize The Cut Segments
- Print Anagrams Together
- Rotate by 90 degree
- Top K Frequent in Array
- Word Break
- Generate Parentheses
- Word Search
- Prerequisite Tasks
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Equivalent Sub-Arrays
- Consecutive 1's not allowed
- Painting the Fence
- Search in Rotated Sorted Array
- Smallest number with at least n trailing zeroes in factorial
- Maximum Product Subarray
- Row with max 1s
- Column name from a given column number
- Form a palindrome
- Nuts and Bolts Problem
- Longest Subarray with Sum K
- Count the Reversals
- Number of positive integral solutions
- Sum of two large numbers
- Factorials of large numbers
- Length of the longest substring
- Remove leading zeros from an IP address
- Magnet Array Problem
- Longest Common Substring
- Smallest distinct window
- Longest Palindrome in a String
- Integer to Words
- K-th element of two Arrays
- String formation from substring
- Longest Arithmetic Subsequence
- Triplets with Smaller Sum
- Rod Cutting
- Minimum swaps and K together
- Maximize the sum of selected numbers from a sorted array to make it empty
- Smallest Absolute Difference
- LCS of three strings
- Maximum difference of zeros and ones in binary string
- Minimize the Heights II
- First and Last Occurrences
- Reaching the heights
- Next higher palindromic number using the same set of digits
- Nine Divisors
- Find patterns
- Minimum Swaps for Bracket Balancing
- Permutations of a String
- Number following a pattern
- Friends Pairing Problem
- Lexicographically smallest string
- Subarrays Product Less than K
- Max Sum Increasing Subsequence
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- Sieve of Eratosthenes
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Power Of 2 and Subsequences
- Kth Smallest Factor
- Firing employees
- Longest subsequence-1
- Power Set
- Knapsack with Duplicate Items
- nCr
- Number of ways
- Maximum path sum in matrix
- Minimum steps to destination
- Partition Equal Subset Sum
- XOR Game
- Get Minimum Squares
- Handshakes
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Brain Game
- Fill up buckets
- Subset Sums
- N Digit numbers with digits in increasing order
- Fill the Tank
- Knight Walk
- Stepping Numbers
- Return two prime numbers
- Fact Digit Sum
- Find Prime numbers in a range
- Jumping Numbers
- Grouping Of Numbers
- Find the Safe Position
- Next Permutation
- Smaller on Left
- Geek and knots
- Filling Bucket
- Matrix Exponentiation
- Longest Repeating Subsequence
- Longest alternating subsequence
- Composite and Prime
- Finding Profession
- Decode the string
- Is Sudoku Valid
- Total Decoding Messages
- Stream First Non-repeating
- Maximum Sub-String after at most K changes
- Villain Con
- Print leaf nodes from preorder traversal of BST
- Largest square formed in a matrix
- Tricky Subset Problem
- Longest Perfect Piece
- Rat Maze With Multiple Jumps
- Snake and Ladder Problem
- Geek and Strings
- The Smurfs
- Satisfy the equation
- Two odd Occuring
- Find all distinct subset (or subsequence) sums
- Queries on a Matrix
- Express as sum of power of natural numbers
- Find the string in grid
- Shortest Uncommon Subsequence
- Help a Thief!!!
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Base Equivalence
- Reverse Spiral Form of Matrix
- Geek and Number String
- Save Your Life
- Hamiltonian Path
- Coins of Geekland
- Transfiguration
- Spidey Sense
- Escape the Forbidden Forest
- Jump Game
- Iterative Postorder
- Subset Sum Problem
- Bellman-Ford
- Capacity To Ship Packages Within D Days
- Substrings of length k with k-1 distinct elements
- Clone a stack without using extra space
- Count pairs in array divisible by K
- Number of Provinces
- Binary Matrix with at most K 1s
- BST to max heap
- BST to greater sum tree
- Find rectangle with corners as 1
- Cousins of a given node
- Sort for Singly Linked List
- Flatten binary tree to linked list
- IPL 2021 - Match Day 2
- Target Sum
- Maximum number of events that can be attended
- Longest Possible Route in a Matrix with Hurdles
- Robots
- Hit most Balloons
- Enemy
- Levels Of Game
- Smallest sum contiguous subarray
- Array Removals
- Minimum Cost to cut a board into squares
- Stack Permutations
- Replace every element with the least greater element on its right
- Minimum Swaps
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Number Of Islands
- Merging Details
- Maximum Multiple
- Number of Ways to Arrive at Destination
- Delete N nodes after M nodes of a linked list
- Check for BST
- Right View of Binary Tree
- Mirror Tree
- Height of Binary Tree
- Balanced Tree Check
- Left View of Binary Tree
- Transform to Sum Tree
- Queue using two Stacks
- Stack using two queues
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Run Length Encoding
- Josephus problem
- Kth largest element in BST
- Three way partitioning
- More than n/k Occurrences
- Reverse first K of a Queue
- Get min at pop
- Power of 2
- Array Leaders
- Print adjacency list
- Winner of an election
- Isomorphic Strings
- Reverse Words
- Parenthesis Checker
- Generate Binary Numbers
- Minimum Cost of ropes
- N meetings in one room
- Reach a given score
- Union-Find
- Count ways to N'th Stair
- First Repeating Element
- Union of Arrays with Duplicates
- Positive Negative Pair
- Product array puzzle
- Roman Number to Integer
- Missing And Repeating
- Sort by Set Bit Count
- Pairs with certain difference
- Common in 3 Sorted Arrays
- Sum of elements between k1'th and k2'th smallest elements
- Search in a Row-Column sorted matrix
- Chocolate Distribution Problem
- Find Pair Given Difference
- Smallest subarray with sum greater than x
- Amend The Sentence
- Remove Consecutive Characters
- Rearrange a string
- Two Sum - Pair with Given Sum
- Second most repeated string in a sequence
- Number of occurrence
- Longest Common Prefix of Strings
- Min Number of Flips
- Two sum -Pairs with 0 Sum
- Maximum sum of increasing order elements from n arrays
- Merge two binary Max heaps
- Palindrome String
- Fitting The Array
- Adding Array Elements
- Number of 1 Bits
- Nth Fibonacci Number
- Change Bits
- The Bit Game
- Reach the Nth point
- Minimum number of Coins
- Perfect Numbers
- Smallest number with sum of digits as N and divisible by 10^N
- Maximize Toys
- Squares in N*N Chessboard
- BBT counter
- Tom and Jerry
- Maximum Height Tree
- Help Ishaan
- Sequence Fun
- Overlapping rectangles
- Help the Old Man!!!
- Primes sum
- Print the pattern
- Chicks in a Zoo
- Minimum Exchange
- Earthquake and the Paint Shop
- Array to BST
- Count all possible paths from top left to bottom right
- Ball coloring
- Rearrange Geek and his Classmates
- Modified Numbers and Queries
- Sum of k smallest elements in BST
- Print Diagonally
- Gadgets of Doraland
- Queue using stack
- Largest value in each level
- Maximum number of 2X2 squares
- Find good numbers within the range
- Silver and Gold
- License Key Formatting
- Find all possible paths from top to bottom
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Smallest window containing 0, 1 and 2
- Move Last Element to Front of a Linked List
- Find pairs with given sum in doubly linked list
- Kth Mex
- Linked List Group Reverse
- Min distance between two given nodes of a Binary Tree
- Max rectangle
- Alien Dictionary
- Smallest range in K lists
- Merge Sort on Doubly Linked List
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Number of Turns in Binary Tree
- Trapping Rain Water
- Smallest window containing all characters
- Max of min for every window size
- Find median in a stream
- Solve the Sudoku
- Burning Tree
- Merge Without Extra Space
- The Painter's Partition Problem-II
- Distinct palindromic substrings
- Ugly Numbers
- Count Smaller elements
- Longest Prefix Suffix
- Wildcard string matching
- Edit Distance
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Median in a row-wise sorted Matrix
- Boolean Parenthesization
- Bike Racing
- Word Break - 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- nCr mod M | Part 1
- Phone directory
- Optimal binary search tree
- Word Wrap
- Maximum sum Rectangle
- Corona Vaccine
- Search Pattern (Z-algorithm)
- Minimum X (xor) A
- Minimum operations to convert array A to B
- Sorted Linked List to BST
- Palindrome Pairs
- Count occurrences of a given word in a 2-d array
- Number of distinct words with K maximum contiguous vowels
- Reverse a sublist of a linked list
- Shortest Unique prefix for every word
- Min Chars to Add for Palindrome
- Minimum time to fulfil all orders
- Queue using Linked List
- Sum Except First and Last
- Palindromic Array
- Linked List Insertion At End
- Anagram of String
- Circular Linked List Traversal
- Sum of Binary Tree
- Reverse a String
- Merge and Sort
- Value equal to index value
- Immediate Smaller Element
- Repeated Character
- Elements in the Range
- Largest Element in Array
- Rotate Array by One
- Game with nos
- One odd Occuring
- Ishaan Loves Chocolates
- Array Subset
- Min and Max in Array
- GCD of Array
- 1s Complement
- Find position of set bit
- Median of an Array
- Binary number to decimal number
- Count Squares
- Find the position of M-th item
- Middle of Three
- Sorted matrix
- Max Min
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