Month: April 2020
[Programming Problem] Deepest Leaves Sum
Given a binary tree, return the sum of values of its deepest leaves. Example 1: Input: root = [1,2,3,4,5,null,6,7,null,null,null,null,8] Output: 15 [Problem Link] Algorithm...
[Programming Problem] Minimum Remove to Make Valid Parentheses
Given a string s of ‘(‘ , ‘)’ and lowercase English characters. Your task is to remove the minimum number of parentheses ( ‘(‘...