题意: 给你一个地图,地图上有公交站点和路线,问你从起点到终点至少要换多少次公交路线. 思路: 首先上面的题意说的和笼统,没说详细是因为这个题目叙述的很多,描述起来麻烦, 下面说思路,做这个题首先我们要把起点和终点的坐标求出来,每次点击地图我都是记录当前现则框的坐上角坐标,最后确定图之后再加上给的x,y转换后的实际位置,这样就的到了精准的位置,然后建图,题目让求的是换车次数,而题目给的是路径,所以我们要把每个路径都拆成任意边,比如 a -> b - > c 要拆成 a…
Implement a trie with insert, search, and startsWith methods. Note:You may assume that all inputs are consist of lowercase letters a-z. 这道题让我们实现一个重要但又有些复杂的数据结构-字典树, 又称前缀树或单词查找树,详细介绍可以参见网友董的博客,例如,一个保存了8个键的trie结构,"A", "to", "tea&quo…
Phone Number Time Limit: 1000ms Memory limit: 65536K 有疑问?点这里^_^ 题目描述 We know that if a phone number A is another phone number B’s prefix, B is not able to be called. For an example, A is 123 while B is 12345, after pressing 123, we call A, and not…
The ACM team is working on an AI project called (Eih Eye Three) that allows computers to write poems. One of the problems they stumbled upon is finding words with the same suffix. The ACM team constructed a dictionary of words, They are interested on…
Phone List Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 18421 Accepted Submission(s): 6207 Problem Description Given a list of phone numbers, determine if it is consistent in the sense tha…
统计难题 Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131070/65535 K (Java/Others)Total Submission(s): 35639 Accepted Submission(s): 13322 Problem Description Ignatius最近遇到一个难题,老师交给他很多单词(只有小写字母组成,不会有重复的单词出现),现在老师要他统计出以某个字符串为前缀的单词数量(单词本身也是自己的…