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问题 i would to search a string into another string but i'm facing an issue. There is my code : reference = "project/+bug/1234"; str = "+bug/1234"; alert(reference.search(str)); //it should alert 8 (index of matched strings) but it alert -1 : so, str wasn't found into reference. I've found what's the problem is, and it seems to be the " + " character into str, because .search("string+str") seems to evaluate searched string with the regex " + " 回答1: Just use string.indexOf(). It takes a literal

问题 i would to search a string into another string but i'm facing an issue. There is my code : reference = "project/+bug/1234"; str = "+bug/1234"; alert(reference.search(str)); //it should alert 8 (index of matched strings) but it alert -1 : so, str wasn't found into reference. I've found what's the problem is, and it seems to be the " + " character into str, because .search("string+str") seems to evaluate searched string with the regex " + " 回答1: Just use string.indexOf(). It takes a literal

问题 I would like to know some complexities of binary search tree. I can't find complete information. I want to know complexities for the following operations on a binary search tree to add/insert an element to remove an element to find an element (as I know this one is O(log(n)) ) 回答1: Insertion, deletion and searching in a binary search tree are: O(N) in the worst case; O(log(N)) in the average case. 回答2: If you have balanced binary tree, all three complexities will be of O(log(N)) . If you are

问题 I am working on a jQuery Datatable project where I need to filter the data based on specific row classes. I'm adding classes to my rows upon row creation based on a condition. I'm trying to figure out a way for my user to click a button which would apply a filter that only displays rows that contain a specific class. I've tried a few different solutions but I can't seem to make it work. Does anyone know how to do this correctly? Here is the JSFiddle $('#table').DataTable({ data: data, columns

问题 I'm new to php and mysql so I need some help with my query. This is my sql query SELECT * FROM table1 WHERE (Name LIKE '%$keyword%' OR ZipCode LIKE '%$keyword%') AND Category LIKE '$category' AND Country LIKE '$country' LIMIT $start, $limit Now what I want to do exaclty is This query should search column names with Name or ZipCode using a text field with the name keyword. That is either keyword matches the Name column or the ZipCode. The query should also work if no keyword is entered and

问题 I want to search a sorted list of strings for all of the elements that start with a given substring. Here's an example that finds all of the exact matches: import bisect names = ['adam', 'bob', 'bob', 'bob', 'bobby', 'bobert', 'chris'] names.sort() leftIndex = bisect.bisect_left(names, 'bob') rightIndex = bisect.bisect_right(names, 'bob') print(names[leftIndex:rightIndex]) Which prints ['bob', 'bob', 'bob'] . Instead, I want to search for all the names that start with 'bob'. The output I want

问题 I want to search a sorted list of strings for all of the elements that start with a given substring. Here's an example that finds all of the exact matches: import bisect names = ['adam', 'bob', 'bob', 'bob', 'bobby', 'bobert', 'chris'] names.sort() leftIndex = bisect.bisect_left(names, 'bob') rightIndex = bisect.bisect_right(names, 'bob') print(names[leftIndex:rightIndex]) Which prints ['bob', 'bob', 'bob'] . Instead, I want to search for all the names that start with 'bob'. The output I want

问题 I have a List< Dictionary < string, object >> variable as follows. private static List<Dictionary<string, object>> testData = new List<Dictionary<string, object>>(100); // Just Sample data for understanding. for (int i = 0; i < 100; i++) { var test = new Dictionary<string, object> { { "aaa", "aaa" + i % 4 }, { "bbb", "bbb" + i % 4 }, { "ccc", "ccc" + i % 4 }, { "ddd", "ddd" + i % 4 }, { "eee", "eee" + i % 4 }, { "fff", "fff" + i % 4 }, { "ggg", "ggg" + i % 4 }, { "hhh", "hhh" + i % 4 }, {

问题 I have a List< Dictionary < string, object >> variable as follows. private static List<Dictionary<string, object>> testData = new List<Dictionary<string, object>>(100); // Just Sample data for understanding. for (int i = 0; i < 100; i++) { var test = new Dictionary<string, object> { { "aaa", "aaa" + i % 4 }, { "bbb", "bbb" + i % 4 }, { "ccc", "ccc" + i % 4 }, { "ddd", "ddd" + i % 4 }, { "eee", "eee" + i % 4 }, { "fff", "fff" + i % 4 }, { "ggg", "ggg" + i % 4 }, { "hhh", "hhh" + i % 4 }, {

问题 This is my controller $term = $request->get('q'); // return $request->q; $products = Post::whereHas('user', function($query) use($term) { $query->where('name', 'like', '%'.$term.'%'); })->orWhere('tags','LIKE','%'.$term.'%')->get(); return view('pages.search', compact('products','users')); This is working good for single keyword search. But I want to use it for multiple keywords. Like laravel php etc. Please guide me when I search multiple values like abc php laravel or anything then it