Mohammad Hossein’s Tech Notes

Notes on LeetCode, interview prep, machine learning, and scientific computing.

Mastering LeetCode Problem 0167

LeetCode Daily Challenge_Two Sum II - Input Array Is Sorted

11 min read · 2026

Mastering LeetCode Problem 0680

LeetCode Daily Challenge_Valid Palindrome II

12 min read · 2026

Mastering LeetCode Problem 0167

LeetCode Daily Challenge_Two Sum II - Input Array Is Sorted

11 min read · May 08, 2026

2026 · Array TwoPointers BinarySearch · LeetCode-Problems
Mastering LeetCode Problem 0680

LeetCode Daily Challenge_Valid Palindrome II

12 min read · May 07, 2026

2026 · TwoPointers String Greedy · LeetCode-Problems
Mastering LeetCode Problem 0345

LeetCode Daily Challenge_Reverse Vowels of a String

13 min read · May 06, 2026

2026 · TwoPointers String · LeetCode-Problems
Mastering LeetCode Problem 0125

LeetCode Daily Challenge_Valid Palindrome

12 min read · May 06, 2026

2026 · TwoPointers String · LeetCode-Problems
Mastering LeetCode Problem 0977

LeetCode Daily Challenge_Squares of a Sorted Array

13 min read · May 05, 2026

2026 · Array TwoPointers Sorting · LeetCode-Problems