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* Courses * Tutorials * Jobs * Practice * Contests Sign In Switch to Dark Mode Data Structure Java Python HTML Interview Preparation person_outlineProfiledescriptionArticlesgroupCommunityschoolCollegesbusinessCompaniespeople_outlineCampus Ambassadors T chinthateja07 + Follow Current POTD Streak STREAK 05/988 days Longest streak/Global longest streak Institution Vellore institute of technology Language Used Java, C++ -------------------------------------------------------------------------------- Overall Coding Score 853 Total Problem Solved 261 Monthly Coding Score 4 -------------------------------------------------------------------------------- Apply for Campus Ambassador 129 submissions in current year Current202320222021 chevron_leftchevron_right FebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberJanuary JanuaryFebruaryMarchApril SCHOOL (1) BASIC (14) EASY (85) MEDIUM (147) HARD (14) * Reverse a linked list * Detect Loop in linked list * Delete nodes having greater value on right * Reverse a Doubly Linked List * Count BST nodes that lie in a given range * Check for BST * Right View of Binary Tree * Delete without head pointer * Height of Binary Tree * Check for Balanced Tree * Finding middle element in a linked list * Left View of Binary Tree * Transform to Sum Tree * Intersection of two sorted Linked lists * Find Transition Point * Queue using two Stacks * Remove duplicate element from sorted Linked List * Level order traversal in spiral form * DFS of Graph * BFS of graph * Determine if Two Trees are Identical * Lowest Common Ancestor in a BST * Implement two stacks in an array * Binary Tree to BST * Kth largest element in BST * Minimum distance between two numbers * Count distinct elements in every window * Special Stack * Level order traversal * Count More than n/k Occurences * Symmetric Tree * Queue Reversal * Reverse First K elements of Queue * Predict the Column * Longest Consecutive 1's * Modular Multiplicative Inverse * Wave Array * Equilibrium Point * Leaders in an array * Sum of upper and lower triangles * Print Matrix in snake Pattern * Boundary traversal of matrix * Anagram * Winner of an election * Check if strings are rotations of each other or not * Isomorphic Strings * Reverse words in a given string * Panagram Checking * Non Repeating Character * Parenthesis Checker * Minimum Cost of ropes * N meetings in one room * Missing number in array * Product array puzzle * Roman Number to Integer * Maximize sum after K negations * Minimum element in a sorted and rotated array * Move all zeroes to end of array * Remove all duplicates from a given string * Move all negative elements to end * Chocolate Distribution Problem * Count the triplets * Find Pair Given Difference * Remove Duplicates * Max Sum without Adjacents * Second Largest * Second most repeated string in a sequence * Check if array is sorted * Longest Distinct characters in string * Find first repeated character * Count pairs with given sum * Merge two binary Max heaps * Palindrome String * Number of 1 Bits * Max Sum Subarray of size K * Nth Fibonacci Number * Maximize Toys * Subset Sums * Game with String * Row with minimum number of 1's * Inorder Traversal and BST * Plus One * Smallest window containing 0, 1 and 2 * Find pairs with given sum in doubly linked list * Fibonacci series up to Nth term * Nearly Sorted Algorithm * Reverse a Linked List in groups of given size * Add two numbers represented by linked lists * Merge 2 sorted linked list in reverse order * Bottom View of Binary Tree * Boundary Traversal of binary tree * Detect cycle in a directed graph * Detect cycle in an undirected graph * Lowest Common Ancestor in a Binary Tree * The Celebrity Problem * Largest subarray with 0 sum * Topological sort * Merge K sorted linked lists * Find the number of islands * Find kth element of spiral matrix * Get minimum element from stack * Kth element in Matrix * Remove loop in Linked List * Implementing Dijkstra Algorithm * Minimum Spanning Tree * Minimum Swaps to Sort * Check if Linked List is Palindrome * Strongly Connected Components (Kosaraju's Algo) * Bipartite Graph * Merge k Sorted Arrays * Top View of Binary Tree * Peak element * Linked List that is Sorted Alternatingly * Count the nodes at distance K from leaf * Duplicate Subtrees * ZigZag Tree Traversal * Ceil in BST * Rearrange Array Alternately * Maximum Index * Trapping Rain Water * Kadane's Algorithm * Majority Element * Find Indexes of a subarray with given sum * Triplet Sum in Array * Boolean Matrix * Spirally traversing a matrix * Distance of nearest cell having 1 * Subarray with 0 sum * Longest consecutive subsequence * Stock span problem * Next Greater Element * Maximum of all subarrays of size k * Fractional Knapsack * Job Sequencing Problem * Minimum Platforms * Combination Sum * M-Coloring Problem * Stickler Thief * Optimal Strategy For A Game * Longest Increasing Subsequence * Longest Common Subsequence * 0 - 1 Knapsack Problem * Find whether path exist * Kth smallest element * Shortest Common Supersequence * Rotten Oranges * Steps by Knight * Print Anagrams Together * Top K Frequent Elements in Array - I * Word Break * Prerequisite Tasks * Sort an array of 0s, 1s and 2s * Find Missing And Repeating * Equal Sum * Count Occurences of Anagrams * Painting the Fence * Search in a Rotated Array * Largest Number formed from an Array * Maximum Product Subarray * Longest subarray with sum divisible by K * Row with max 1s * Count the Reversals * Length of the longest substring * k largest elements * Longest Common Substring * Longest K unique characters substring * Arranging the array * Count triplets with sum smaller than X * Rod Cutting * Longest Palindromic Subsequence * First negative integer in every window of size k * Minimize the Heights II * First and last occurrences of x * Valid Substring * Minimum number of deletions. * Permutations of a given string * Count the subarrays having product less than k * Non Repeating Numbers * Edit Distance * Minimum number of deletions and insertions. * Maximum sum increasing subsequence * Minimum cost to fill given weight in a bag * Coin Change * Perfect Sum Problem * Longest subsequence-1 * nCr * Maximum path sum in matrix * Partition Equal Subset Sum * Longest Bitonic subsequence * Longest Repeating Subsequence * Largest square formed in a matrix * Replace O's with X's * Floyd Warshall * Flood fill Algorithm * Shortest Source to Destination Path * Maximum sum Rectangle * Subset Sum Problem * Longest Palindromic Substring * Search Pattern (Rabin-Karp Algorithm) * Distance from the Source (Bellman-Ford Algorithm) * Number of Provinces * Insertion Sort for Singly Linked List * Flatten binary tree to linked list * Find element occuring once when all other are present thrice * All Unique Permutations of an array * Course Schedule * Clone an Undirected Graph * Overlapping Intervals * Maximum product subset of an array * Number of Distinct Islands * Shortest Distance in a Binary Maze * Minimum Multiplications to reach End * Number Of Enclaves * Eventual Safe States * City With the Smallest Number of Neighbors at a Threshold Distance * Number Of Islands * Number of Ways to Arrive at Destination * Path With Minimum Effort * Cheapest Flights Within K Stops * Connecting the graph * Maximum Stone Removal * Shortest path in Directed Acyclic Graph * Buy Stock with Cooldown * Subset II * Combination Sum II * Shortest Path in Weighted undirected graph * Minimum Absolute Difference In BST * Buy Stock with Transaction Fee * Count Square Submatrices with All Ones * Floor in BST * Unique Paths in a Grid * Find Kth permutation * Count Leaves in Binary Tree * Check If Circular Linked List * Implement stack using array * Implement Queue using array * Implement strstr * Linked List Insertion * Minimum element in BST * Identical Linked Lists * Reverse a String * Union of two arrays * Remove Consecutive Characters * Cyclically rotate an array by one * Exceptionally odd * Find minimum and maximum element in an array * Reorder List * Wildcard Pattern Matching * Max rectangle * Merge two BST 's * Alien Dictionary * String Permutations * Merge Without Extra Space * Word Ladder I * Form a palindrome * Palindromic Partitioning * Maximum Profit * Matrix Chain Multiplication * Articulation Point - 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