Author: basketwang

https://leetcode.com/problems/missing-ranges/ Tag: Array/List, recursion Key Points： Solution: Linear Scan Solution: Recursion When thinking of the recursion, always focus on the base case and logic for current recursive call and assuming it has been able to handle the next recursive call. Don’t be trapped by over-thinking into multi-level recursive calls. For this question, First step, we…

https://leetcode.com/problems/find-peak-element/description/ Tag: Array/List, Binary Search Key Points: Solution:

https://leetcode.com/problems/one-edit-distance/description/ Tag: String Key Points: Solution

https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters/description/ Tag: Array/List, Sliding Window Key Points: Solution: