Showing 12 posts tagged with "leetcode"
C++ Solution for LeetCode 2594: Minimum Time to Repair Cars with Binary Search on Answer
Master LeetCode 2594 Minimum Time to Repair Cars in C++20 using binary search on monotonic answers and rank frequency map optimization.
LeetCode 2375: Construct Smallest Number From DI String — Monotonic Stack & Two-Pointer Analysis
Algorithmic deep dive on LeetCode 2375 (Construct Smallest Number From DI String): monotonic stack greedy digit reversal, step-by-step trace of IIIDIDDD, and C++20 / TypeScript solutions.
Generating Subsets via Backtracking: LeetCode 1863 XOR Totals & Mathematical O(n) Proof
Algorithmic masterclass on LeetCode 1863 (Sum of All Subset XOR Totals): backtracking state-space trees vs optimal O(n) bitwise OR mathematical proof with C++20, TypeScript, and Python 3 implementations.
LeetCode 1718: Constructing the Lexicographically Largest Distanced Sequence via Greedy Backtracking
Comprehensive algorithmic guide to LeetCode 1718: greedy backtracking, distanced sequence invariants, early exit optimizations, and C++/TypeScript implementations.
LeetCode 3160: Find the Number of Distinct Colors Among the Balls (Dual Hash Map State Machine)
Optimal algorithmic solution for LeetCode 3160: Find the Number of Distinct Colors Among the Balls using a Dual Hash Map State Machine in O(N) time and O(N) space.
LeetCode 1726: Tuple with Same Product — Hash Map Combinatorics & O(n²) Optimization
LeetCode 1726 Tuple with Same Product solution: O(n²) pairwise product hash map, mathematical proof of 8x permutation multiplier, C++20 and TypeScript.
LeetCode 1422: Maximum Score After Splitting a String (O(N) Prefix Balance)
Master LeetCode 1422 (Maximum Score After Splitting a String): single-pass O(N) algebraic reduction, prefix balance tracking, and O(1) space proofs.
LeetCode 2466: Count Ways To Build Good Strings — Tabulation DP vs Memoized DFS & Combinatorics
Comprehensive algorithmic guide for LeetCode 2466 (Count Ways To Build Good Strings): tabulation dynamic programming vs memoized DFS, modulo 10^9+7 arithmetic, and C++20 / TypeScript code.
LeetCode 543: Diameter of a Binary Tree in C++ & Post-Order DFS
Master LeetCode 543 (Diameter of a Binary Tree) in C++: post-order DFS height calculation, eliminating O(N^2) redundancy, and call stack analysis.
LeetCode 20: Valid Parentheses in TypeScript & V8 Stack Mechanics
Master LeetCode 20 (Valid Parentheses) in TypeScript: LIFO stack mechanics, V8 array internals, early exit branch pruning, and O(N) complexity proofs.
C++ Solution for Generate Parentheses (LeetCode #22): Backtracking & Catalan Numbers
Master LeetCode #22 Generate Parentheses in C++20 with backtracking pruning invariants, Catalan numbers combinatorics, and memory buffer optimization.
Minimum Characters to Add for Palindrome: Algorithms & Solutions
A complete algorithmic guide to solving the Minimum Characters to Add for Palindrome problem in O(N) linear time using KMP LPS preprocessing.