Xingxing Zheng

Todo List

3 min read · 2024

1944. Number of Visible People in a Queue

8 min read · June 10, 2025

2025 · Hard · LeetCode Stack
2454. Next Greater Element IV

8 min read · June 10, 2025

2025 · Hard · LeetCode Stack
3442. Maximum Difference Between Even and Odd Frequency I

5 min read · June 10, 2025

2025 · Medium · LeetCode Array
654. Maximum Binary Tree

10 min read · June 08, 2025

2025 · Medium · LeetCode Trees
3113. Find the Number of Subarrays Where Boundary Elements Are Maximum

8 min read · June 08, 2025

2025 · Hard · LeetCode Stack