Leetcode 分类

2022

02-16

[LeetCode][114. Flatten Binary Tree to Linked List] 3 Approaches: PreOrder, Iteration and Recursion

02-16

[LeetCode][1780. Check if Number is a Sum of Powers of Three] 3 Solutions: Tricky, Recursion and Base 3 Convertion

02-13

[LeetCode][350. Intersection of Two Arrays II] 2 Solutions: Sort with Two Pointers and HashMap

02-10

[LeetCode][36. Valid Sudoku] 2 Approaches: HashSet and Array

02-07

[LeetCode][242. Valid Anagram] 3 Approaches: HashMap, Sorting and Counting

02-01

[LeetCode][136. Single Number] The XOR Cheat Sheet | Bit Manipulation with Easy Detailed Explanation

01-20

[LeetCode][171. Excel Sheet Column Number] 2 Approaches: Base Conversion from High to Low and from Low to High

01-19

[LeetCode][219. Contains Duplicate II] 3 Approaches: Brute Force, HashMap and Sliding Window

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