摘要： 问题描述： Given n points in the plane that are all pairwise distinct, a "boomerang" is a tuple of points (i, j, k) such that the distance between i and je 阅读全文

摘要： 问题描述： You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the qua 阅读全文

摘要： 问题描述： You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The path does not 阅读全文