Encode a string by counting the consecutive letter. (i.e., "aaaabbxxxyyz" might become "a4b2x3y2z1"). 分析: 这个问题是一个基本的数据压缩算法,将相邻的字符计数存储.解法没有什么特别需要注意的地方,按部就班的实现代码就可以了. class Solution: # @param s, letters as string # @return an encoded str…
原文:http://homepages.ulb.ac.be/~dgonze/TEACHING/bioinfo_glossary.html Affine gap costs: A scoring system for gaps within alignments that charges a penalty for the existence of a gap and an additional per-residue penalty proportional to the gaps length…
http://norvig.com/spell-correct.html Feb 2007to August 2016 How to Write a Spelling Corrector One week in 2007, two friends (Dean and Bill) independently told me they were amazed at Google's spelling correction. Type in a search like [speling] and Go…
Graph and String time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output One day student Vasya was sitting on a lecture and mentioned a string s1s2... sn, consisting of letters "a", "b&q…
IOI2009 Mecho Time Limit: 10000ms Memory Limit: 262144KB This problem will be judged on SPOJ. Original ID: CTOI09_164-bit integer IO format: %lld Java class name: Main Mecho the bear has found a little treasure - the bees' secret honeypot, which…
Puzzle A children's puzzle that was popular 30 years ago consisted of a 5x5 frame which contained 24 small squares of equal size. A unique letter of the alphabet was printed on each small square. Since there were only 24 squares within the frame, t…
题目连接:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=163 # Problem Verdict Language Run Time Submission Date 13767338 227 Puzzle Accepted C++ 0.026 2014-06-19 02:39:04 13766276 227 Puzzle Wrong…
2272: [Usaco2011 Feb]Cowlphabet 奶牛文字 Time Limit: 10 Sec Memory Limit: 128 MBSubmit: 138 Solved: 97[Submit][Status][Discuss] Description Like all bovines, Farmer John's cows speak the peculiar 'Cow'language. Like so many languages, each word in this…
Sometimes people repeat letters to represent extra feeling, such as "hello" -> "heeellooo", "hi" -> "hiiii". Here, we have groups, of adjacent letters that are all the same character, and adjacent characters…
Sometimes people repeat letters to represent extra feeling, such as "hello" -> "heeellooo", "hi" -> "hiiii". Here, we have groups, of adjacent letters that are all the same character, and adjacent characters…
