aashish chauhan
STREAK
00/1466
days
Longest streak/Global longest streak
Language Used
C++, C, Python
Coding Score
1263
Problem Solved
483
Contest Rating
__
974 points
Contributor
974 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
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50k Point
0 submissions in current year
SCHOOL (0)
BASIC (37)
EASY (147)
MEDIUM (256)
HARD (43)
- Longest Even Length Substring
- Sorting Elements of an Array by Frequency
- Rearrange characters
- SP - Special Subsequences
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Detect Loop in linked list
- Count BST nodes that lie in a given range
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Delete without head pointer
- 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
- Sum Tree
- 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
- Two Stacks in an Array
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Max sum in the configuration
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth smallest element in a Matrix
- Clone a Binary Tree
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Interleaved Strings
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze Problem - I
- Closest in BST
- BST with Dead End
- Delete keys in a Linked list
- Merge two BST 's
- Count distinct elements in every window
- Merge k Sorted Arrays
- Root to leaf paths sum
- Longest Palindrome in Linked List
- Bridge edge in a graph
- Find triplets with zero sum
- Duplicate Subtree
- Top View of Binary Tree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Peak element
- Polynomial Addition
- Delete nodes greater than k
- Merge Sort for Linked List
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- XOR Linked List
- Construct tree from Inorder and LevelOrder
- Count the nodes at distance K from leaf
- Isomorphic Trees
- Leaves to DLL
- Diagonal sum in binary tree
- Right Sibling in Binary Tree
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Check if two Nodes are Cousins
- Count Number of SubTrees having given Sum
- Vertical Width of a Binary Tree
- Count set bits
- Gray to Binary Conversion
- Reverse array in groups
- Smallest Positive Missing
- Wave Array
- Possible Words From Phone Digits
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Stock buy and sell
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Two Repeated Elements
- Unique BST's
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Number of pairs
- Spirally traversing a matrix
- Rotate by 90 degree
- Unit Area of largest region of 1's
- Subarrays with equal 1s and 0s
- Longest Consecutive Subsequence
- Strings Rotations of Each Other
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- Infix to Postfix
- K Sized Subarray Maximum
- Kth smallest element
- Activity Selection
- Minimum Platforms
- Stickler Thief
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Minimum number of jumps
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Number of Unique Paths
- Equal Sum Partition
- Sort according to an Array
- 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
- Count subsequences of type a^i, b^j, c^k
- Maximize The Cut Segments
- Rotate by 90 degree
- Overlapping Intervals
- Closest Three Sum
- Word Break
- Generate Parentheses
- Word Boggle
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Maximum Index
- Flip Bits
- Sum of Middle elements of two sorted arrays
- Single Among Doubles in a Sorted
- Pythagorean Triplet
- Painting the Fence
- Pair Sum Closest to 0
- Search in Rotated Sorted Array
- Sum of bit differences
- Count Full Binary Trees
- Maximize The Array
- Max absolute difference
- Form the Largest Number
- Maximum Product Subarray
- Swapping pairs make sum equal
- Check if frequencies can be equal
- Column name from a given column number
- Concatenation of Zig-Zag String in n Rows
- Design a tiny URL or URL shortener
- Form a palindrome
- Longest Subarray with Sum K
- Transform String
- Cutting Binary String
- Sum of two large numbers
- Max Sum without Adjacents
- Factorials of large numbers
- Length of the longest substring
- k largest elements
- Longest Common Substring
- Smallest distinct window
- Longest substring with distinct characters
- Count of substrings containing K ones
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Product Pair
- K-th element of two Arrays
- Possible groups
- Longest Arithmetic Subsequence
- Triplets with Smaller Sum
- Rod Cutting
- Longest Palindromic Subsequence
- Longest Common Increasing Subsequence
- First negative in every window of size k
- Smallest Non-Zero Number
- Find the number of subarrays having even sum
- Roll the characters of a String
- Minimize the Heights II
- Surpasser Count
- Valid Substring
- Permutations of a String
- Missing Intervals
- Number following a pattern
- Find largest word in dictionary
- Rotate String
- Combination Sum - Part 2
- Unique Number II
- Bleak Numbers
- Modular Exponentiation
- Angle between hour and minute hand
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sequence of Sequence
- Sieve of Eratosthenes
- String Subsequence
- Dice throw
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- Maximum path sum in matrix
- Special Keyboard
- Longest Bitonic subsequence
- Min Coin
- Array Pair Sum Divisibility Problem
- Number of paths
- Knight Walk
- Permutation with Spaces
- Card Rotation
- Return two prime numbers
- Jumping Numbers
- Two water Jug problem
- Fraction to Repeating Decimal
- Numbers with alternative 1's
- Next Permutation
- Total Decoding Messages
- Stream First Non-repeating
- Possible paths
- Segregate even and odd nodes in a Linked List
- Kth Largest in a Stream
- Snake and Ladder Problem
- Geek and Strings
- Replace O's with X's
- Two odd Occuring
- Check Mirror in N-ary tree
- Express as sum of power of natural numbers
- Flood fill Algorithm
- Shortest Source to Destination Path
- Recursively Remove Adjacent Duplicates
- Longest Palindromic Substring
- Form a palindrome
- Bellman-Ford
- Construct list using given q XOR queries
- Overlapping Intervals
- Graph is Tree or Not
- Connect Nodes at Same Level
- String rp or pr
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- LRU Cache
- Box Stacking
- Maximum subset XOR
- Alien Dictionary
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Trapping Rain Water
- Max Circular Subarray Sum
- Smallest window containing all characters
- Histogram Max Rectangular Area
- Find median in a stream
- Solve the Sudoku
- Minimum Cost Path
- Word Ladder I
- The Painter's Partition Problem-II
- Palindrome SubStrings
- Distinct palindromic substrings
- Ugly Numbers
- Largest rectangle of 1s with swapping of columns allowed
- Longest Prefix Suffix
- Print all LCS sequences
- Maximum XOR subset
- Edit Distance
- Min cut Square
- Minimum sum partition
- Matrix Chain Multiplication
- Bit Difference
- Median in a row-wise sorted Matrix
- Longest valid Parentheses
- Longest Zig-Zag Sub Sequence
- Word Break - 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Convex Hull
- Maximum sum Rectangle
- Word Break (Trie)
- Count occurrences of a given word in a 2-d array
- SP - Palindrome Family
- SP - Stack Design
- SP - BST Traversal
- SPP - K<sup>th</sup> largest and smallest
- SP - Golden String
- SP - Catch The Nun
- Reverse a linked list
- Pairwise swap elements of a linked list
- Remove duplicates from an unsorted linked list
- Bubble Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Middle of a Linked List
- Left View of Binary Tree
- Transform to Sum Tree
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Stack using two queues
- Level Order in spiral form
- 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
- Postorder from Inorder and Preorder
- Lowest Common Ancestor in a BST
- Binary Search
- Run Length Encoding
- Largest subarray of 0's and 1's
- BST Keys in a Range
- Minimum Depth of a Binary Tree
- Binary Tree to BST
- Convert to Roman No
- Match specific pattern
- Josephus problem
- Expression Tree
- Kth largest element in BST
- Array Duplicates
- Special Stack
- Three way partitioning
- Level order traversal
- Inorder Successor in BST
- Symmetric Tree
- Construct BST from Postorder
- Find length of Loop
- Change of Key in BST
- Linked List Matrix
- Queue Reversal
- Sum of Leaf Nodes
- Closest Neighbour in BST
- Exchange the Leaf Nodes
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Decimal to binary
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Longest Consecutive 1's
- Power of 2
- Swap odd and even bits
- Equilibrium Point
- Array Leaders
- Sort by Absolute Difference
- Anagram
- String Rotated by 2 Places
- Reverse Words
- Minimum indexed character
- Parenthesis Checker
- Generate Binary Numbers
- K largest elements
- Minimum Cost of ropes
- N meetings in one room
- Count number of hops
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Excel Sheet | Part - 2
- Missing And Repeating
- Count the elements
- Find the closest number
- Sorted and Rotated Minimum
- Search in a Row-Column sorted matrix
- String Duplicates Removal
- Min sum formed by digits
- Minimize the sum of product
- Chocolate Distribution Problem
- Find Pair Given Difference
- Swap and Maximize
- Left most and right most index
- Remaining String
- Check if a given string is a rotation of a palindrome
- Sort in specific order
- Arya's Long String
- Remove Duplicates
- Nearest multiple of 10
- Difficulty of sentence
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Sort Unsorted Subarray
- Number of occurrence
- Average of Prefix
- Longest common prefix
- Modify the Array
- String's Count
- Longest Common Prefix of Strings
- Even and odd elements at even and odd positions
- Meta Strings
- Maximum number of characters between any two same character
- Sum of distinct elements for a limited range
- Maximum number of zeroes
- Element with left side smaller and right side greater
- Merging two unsorted arrays in sorted order
- Transform the array
- Palindrome String
- Print Bracket Number
- Generate binary string
- Is Binary Number Multiple of 3
- Number of 1 Bits
- Check if a Integer is power of 8 or not
- Lucky Number
- Reverse Bits
- Toggle bits in the given range
- Element that appears once where every element occurs twice
- Maximum Product Cutting
- Party of Couples
- Minimum steps to minimize n as per given condition
- Numbers with same first and last digit
- Perfect Numbers
- Day of the week
- Magic numbers
- Largest number possible
- Page Faults in LRU
- BBT counter
- Largest zigzag sequence
- Overlapping rectangles
- Print Pattern
- Count all possible paths from top left to bottom right
- Shortest distance in infinite tree
- Rotate Array
- Count Leaves in Binary Tree
- Queue using Linked List
- Queue Using Array
- Replace all 0's with 5
- First Occurence
- Sum Except First and Last
- Search a node in BST
- Remainder with 7
- Linked List Insertion At End
- Minimum element in BST
- longest substring containing '1'
- Start Coding - Python
- Space Seperated - Python
- Bit Difference
- Number is sparse or not
- Binary String
- Remove common characters and concatenate
- Keypad typing
- Type of array
- Check for subsequence
- Odd to Even
- Quick Left Rotation
- Reversing the vowels
- Last index of One
- Distinct Adjacent Element
- URLify a given string
- First K natural numbers
- One odd Occuring
- Array Subset
- Rotating an Array
- Boolean String Value
- Gray Code
- Binary representation
- Reverse digits
- Closest Number
- Pattern Jumping
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