Idiot-maker

摘要： https://oj.leetcode.com/problems/add-binary/ Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100 阅读全文

摘要： https://oj.leetcode.com/problems/balanced-binary-tree/Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced bina... 阅读全文

摘要： https://oj.leetcode.com/problems/minimum-depth-of-binary-tree/Given a binary tree, find its minimum depth.The minimum depth is the number of nodes alo... 阅读全文