Aryan Mittal

LLD Crash Course for Freshers, SDE-I, SDE-II, SSE-I, SSE-II | Complete Guide

2503. Maximum Number of Points From Grid Queries | Heap+BFS

2780. Minimum Index of a Valid Split | Boyer-Moore Majority Voting Algorithm

1976. Number of Ways to Arrive at Destination | Dijkstras Algorithm

2685. Count the Number of Complete Components | DFS | Graph

2115. Find All Possible Recipes from Given Supplies | Topological Sort

2560. House Robber IV | Binary Search on Answer

2226. Maximum Candies Allocated to K Children | Binary Search 2nd Template

3356. Zero Array Transformation II | Diff Array | Binary Search | Two Pointers | 2 Approaches

1358. Number of Substrings Containing All Three Characters | Two Pointers

3306. Count of Substrings Containing Every Vowel and K Consonants II | Two Pointers (Excatly K)

3477 & 3479. Fruits Into Baskets III & II | Segment Tree

3478. Choose K Elements With Maximum Sum | Sorting | Priority Queue

2379. Minimum Recolors to Get K Consecutive Black Blocks | Sliding Window

2523. Closest Prime Numbers in Range | Sieve | Prime Numbers | 2 Approaches

2161. Partition Array According to Given Pivot | Arrays | Two Pointers

3473. Sum of K Subarrays With Length at Least M | Top-Down | Bottom Up DP | Bottom Up Optimised

3472. Longest Palindromic Subsequence After at Most K Operations | DP | Cyclic Behaviour

3469. Find Minimum Cost to Remove Array Elements | DP (Memoization)

3468. Find the Number of Copy Arrays | Array | Math

2460. Apply Operations to an Array | Arrays | 2 Approaches

1092. Shortest Common Supersequence | Recursion - Greedy - Memo - Bottom Up

873. Length of Longest Fibonacci Subsequence | DP & Two Pointers | 2 Approaches

1749. Maximum Absolute Sum of Any Subarray | Prefix Sums | 2 Approaches

1524. Number of Sub-arrays With Odd Sum | Prefix Sums | Arrays

2467. Most Profitable Path in a Tree | DFS | + Single DFS | Tree

3463 & 3461 Check If Digits Are Equal in String After Operations II | nCr | Luca's Theorem | Pascals

3462. Maximum Sum With at Most K Elements | Greedy

889. Construct Binary Tree from Preorder and Postorder Traversal | Standard Approaches

1028. Recover a Tree From Preorder Traversal | Stack | Binary Tree