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c++代码 判断两个线段是否重复。 fast-rcnn目标检测中nms代码中有这个代码段:) Implement a MyCalendar class to store your events. A new event can be added if adding the event will no 阅读全文
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这是leetcode邮件推送的题目,bug-free的代码还是需要debug一段时间的 Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follo 阅读全文
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565. Array Nesting A zero-indexed array A of length N contains all integers from 0 to N-1. Find and return the longest length of set S, where S[i] = { 阅读全文
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柠檬水🍋找零问题,有5 10 20三种面值。解法:能用10元找零就不用5块。 At a lemonade stand, each lemonade costs $5. Customers are standing in a queue to buy from you, and order one 阅读全文
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判断一棵树里是否有两个节点的值之和等于某个值。 653. Two Sum IV - Input is a BST Given a Binary Search Tree and a target number, return true if there exist two elements in th 阅读全文
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这是程序员面试金典里面的一个题目。判断B是否是A旋转得到的,只要判断B是否是A+A的字串即可。 阅读全文