★★ Medium

★★ MediumHash TableLeetCode

Leetcode # 2083. Substrings That Begin and End With the Same Letter

2024/06/08 A1go

★★ MediumHash TableLeetCodePrefix SumSubarray Sums Divisible by K

Leetcode # 523. Continuous Subarray Sum

2024/06/08 A1go

★★ MediumBinary TreeBreadth-First SearchLeetCode

Leetcode # 103. Binary Tree Zigzag Level Order Traversal

2024/04/21 A1go

★★ MediumBinary TreeDepth-First SearchLeetCode

Leetcode # 1302. Deepest Leaves Sum

2024/04/20 A1go

★★ MediumBFS & DFSBinary TreeLeetCode

Leetcode # 1026. Maximum Difference Between Node and Ancestor

2024/04/20 A1go

★★ MediumLeetCodeSliding Window

Leetcode # 2875. Minimum Size Subarray in Infinite Array

2023/10/01 A1go

★★ MediumArrayLeetCodeOne-PassPrefix Sum

Leetcode # 2874. ⭐️ Maximum Value of an Ordered Triplet II

2023/10/01 A1go

★★ MediumArrayLeetCode

Leetcode # 2870. Minimum Number of Operations to Make Array Empty

2023/10/01 A1go

★★ MediumBinary Method / Divide and ConquerLeetCode

Leetcode # 2861. Maximum Number of Alloys

2023/09/19 A1go

★★ MediumLeetCode

Leetcode # 2860. Happy Students

2023/09/19 A1go