1. 求字符串的最长重复子串 例如:aaaaaaaaabbbbcccaaassscvvv这里面的最长重复子串为aaaaaaaaa 算法思路:算法时间复杂度(O(n)) 1. 将这一个字符串先转成char数组: 2. 将这一char数组进行遍历 3. 比较char数组中第i-1个与第i个的字符是否相等,如果不相等则进行截取字符串长度,然后将其进行比较,如果其长度比现有长度大,则进行替换,否则什么也不做 算法实现:(Java实现) private static String reSubStr(Str…

要求:求两个字符串的最长公共子串,如“abcdefg”和“adefgwgeweg”的最长公共子串为“defg”(子串必须是连续的) public class Main03{ // 求解两个字符号的最长公共子串 public static String maxSubstring(String strOne, String strTwo){ // 参数检查 if(strOne==null || strTwo == null){ return null; } if(strOne.equals("&qu…

Musical Theme Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 14874   Accepted: 5118 Description A musical melody is represented as a sequence of N (1<=N<=20000)notes that are integers in the range 1..88, each representing a key on the…

Long Long Message Time Limit: 4000MS   Memory Limit: 131072K Total Submissions: 31904   Accepted: 12876 Case Time Limit: 1000MS Description The little cat is majoring in physics in the capital of Byterland. A piece of sad news comes to him these days…

http://poj.org/problem?id=1743 这题是一道后缀数组的经典例题:求不可重叠最长重复子串. 题意: 有N(1 <= N <=20000)个音符的序列来表示一首乐曲,每个音符都是1..88范围内的整数,现在要找一个重复的主题.“主题”是整个音符序列的一个子串,它需要满足如下条件: 1.长度至少为5个音符. 2.在乐曲中重复出现.(可能经过转调,“转调”的意思是主题序列中每个音符都被加上或减去了同一个整数值) 3.重复出现的同一主题不能有公共部分. 题解: 因为可能同时加…

题意:求可重叠的k次最长重复子串的长度 链接:点我 和poj1743差不多 #include<cstdio> #include<iostream> #include<algorithm> #include<cstring> #include<cmath> #include<queue> #include<map> using namespace std; #define MOD 1000000007 const int I…

题目链接:https://cn.vjudge.net/problem/POJ-1743 题意 给一串整数,问最长不可重叠最长重复子串有多长 注意这里匹配的意思是匹配串的所有元素可以减去或者加上某个值 例: 34 30 26 22 18 82 78 74 70 66 后5个整数的串可以匹配前5个数 思路 LCP问题(最长公共前缀) 两个思路 后缀数组 对height数组二分长度,找到height大于len且两字符串起点差值大于len的情况下,len最大值 哈希+二分 二分长度,哈希值比较字符串找到…

Milk Patterns Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 7586   Accepted: 3448 Case Time Limit: 2000MS Description Farmer John has noticed that the quality of milk given by his cows varies from day to day. On further investigation,…

Milk Patterns Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 7938   Accepted: 3598 Case Time Limit: 2000MS Description Farmer John has noticed that the quality of milk given by his cows varies from day to day. On further investigation,…

题意:求一个字符串里两个不重叠的最长重复子串 代码如下: #include<cstdio> #include<cstdlib> #include<cstring> #include<iostream> using namespace std; ],rank[],y[],Rsort[]; ],a[],height[],n; bool cmp(int k1,int k2,int ln){return wr[k1]==wr[k2] && wr[k1…