一.最长公共子序列问题(LCS问题) 给定两个字符串A和B,长度分别为m和n,要求找出它们最长的公共子序列,并返回其长度.例如: A = "HelloWorld" B = "loop" 则A与B的最长公共子序列为 "loo",返回的长度为3.此处只给出动态规划的解法:定义子问题dp[i][j]为字符串A的第一个字符到第 i 个字符串和字符串B的第一个字符到第 j 个字符的最长公共子序列,如A为“app”,B为“apple”,dp[2][3]…
Common Subsequence Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 55301 Accepted Submission(s): 25537 Problem Description A subsequence of a given sequence is the given sequence with some el…
反恐训练营 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3040 Accepted Submission(s): 693 Problem Description 当今国际反恐形势非常严峻,特别是美国"9.11事件"以后,国际恐怖势力更是有恃无恐,制造了多起骇人听闻的恐怖事件.基于此,各国都十分操心恐怖势力会对本国社会…