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问题 What is the time complexity of a get() and put() in a TreeMap? Is the implementation same as a Red-Black Tree? 回答1: From here: http://java.sun.com/javase/6/docs/api/java/util/TreeMap.html This implementation provides guaranteed log(n) time cost for the containsKey, get, put and remove operations 回答2: TreeMap is: A Red-Black tree based NavigableMap implementation. This implementation provides guaranteed log(n) time cost for the containsKey, get, put and remove operations. Algorithms are

问题 i'm using solr 7.7.2 and I wrote a Java program in Solr using solrj that searches for a word in a huge text file. I use following code to show the search results that represent the whole text. SolrQuery params = new SolrQuery(); params.setQuery("content:word for search"); How to display only one line of text where the word is in that line? All code is like this public static void main(String args[]) throws SolrServerException, IOException { String urlString = "http://localhost:8983/solr/test

问题 i'm using solr 7.7.2 and I wrote a Java program in Solr using solrj that searches for a word in a huge text file. I use following code to show the search results that represent the whole text. SolrQuery params = new SolrQuery(); params.setQuery("content:word for search"); How to display only one line of text where the word is in that line? All code is like this public static void main(String args[]) throws SolrServerException, IOException { String urlString = "http://localhost:8983/solr/test

问题 i'm using solr 7.7.2 and I wrote a Java program in Solr using solrj that searches for a word in a huge text file. I use following code to show the search results that represent the whole text. SolrQuery params = new SolrQuery(); params.setQuery("content:word for search"); How to display only one line of text where the word is in that line? All code is like this public static void main(String args[]) throws SolrServerException, IOException { String urlString = "http://localhost:8983/solr/test

问题 If I have: const char *mystr = "cheesecakes"; FILE *myfile = fopen("path/to/file.exe","r"); I need to write a function to determine whether myfile contains any occurrences of mystr . Could anyone help me? Thanks! UPDATE: So it turns out the platform I need to deploy to doesn't have memstr . Does anyone know of a free implementation I can use in my code? 回答1: If you can't fit the whole file into memory, and you have access to the GNU memmem() extension, then: Read as much as you can into a

问题 If I have: const char *mystr = "cheesecakes"; FILE *myfile = fopen("path/to/file.exe","r"); I need to write a function to determine whether myfile contains any occurrences of mystr . Could anyone help me? Thanks! UPDATE: So it turns out the platform I need to deploy to doesn't have memstr . Does anyone know of a free implementation I can use in my code? 回答1: If you can't fit the whole file into memory, and you have access to the GNU memmem() extension, then: Read as much as you can into a

问题 Is there any command in batch to search and replace a string in environment variable PATH ? For example the contents of environment variable PATH is: C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\AccuRev\bin;C:\Python24 I have to search for C:\Python24 in this variable and need to replace it by C:\Python27 . 回答1: Local PATH replacement The solution provided by wmz is perfect: set "PATH=%PATH:Python24=Python27%" For details

问题 I am supposing that we can use this old recipe and only replace the language german to language simple (that is the "no language")... But it is not working. CREATE TEXT SEARCH DICTIONARY my_synonym ( TEMPLATE = synonym, SYNONYMS = synonym_sample -- default /usr/share/postgresql/12/tsearch_data/synonym_sample.syn ); CREATE TEXT SEARCH CONFIGURATION my_synonym(COPY='simple'); -- need it?? ALTER TEXT SEARCH CONFIGURATION my_synonym ALTER MAPPING FOR asciiword, asciihword, hword_asciipart, word,

问题 We have several hundred clients with unique server names on their own local networks that hosts a specific folder called "Installs". Ultimately what I'm trying to put together is a batch that finds this folder with said name and use an MSI file in that folder to install on their machine. The server name could just be anything, the only thing I know for sure is that it will be sharing out that specific folder. I've tried many variations of net view, find, dir, wmic share.. no such luck, no

问题 I have a website where users can submit pictures. I'd like to search Google automatically with these images to minimise the chance that the pictures are stolen from an other website. I know about the Firefox extension, but that requires me right-clicking every picture and waiting for the result to appear. I'd like to automate this. I was looking for an API, but the Google Image Seach API (https://developers.google.com/image-search/) clearly mentions it's deprecated. I've also found a Google