100 articles · page 15 of 30
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 Dua…
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 perm…
1790. Check if One String Swap Can Make Strings Equal
An in-depth algorithmic guide to LeetCode 1790: Check if One String Swap Can Make Strings Equal, covering mism…
Remove Nth Node From End of List: Two-Pointer Fast & Slow Runner Mechanics
Algorithmic guide to removing the Nth node from end of a linked list: single-pass two-pointer runner technique…
Does birthrate decline equal the Loss of National Identity
Interesting problem of the modern age is overpopulation. Especially as AI begins to grab hold of the globe, wi…
Profound need for Self Correcting Minds
Psychology in my opinion was a pseudoscience for the longest time. It wasn't until we had brain scans that bac…
2270. Number of Ways to Split Array
class Solution { public: int waysToSplitArray(vector<int>& nums) { // Keep track of sum of elements on …
Subarray Sum Equals K: Prefix Sum State Machine, Negative Numbers & Hash Map Frequency Analysis
Complete guide to solving LeetCode 560 Subarray Sum Equals K: Why sliding windows fail on negative numbers, Pr…
1678. Goal Parser Interpretation
A comprehensive guide to LeetCode 1678: Goal Parser Interpretation, covering LL(1) grammars, deterministic sin…
2559. Count Vowel Strings in Ranges
An in-depth algorithmic guide to LeetCode 2559: Count Vowel Strings in Ranges, covering prefix sum arrays, O(1…
1030. Matrix Cells in Distance Order
A comprehensive algorithmic guide to LeetCode 1030: Matrix Cells in Distance Order, covering Manhattan distanc…
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 ba…