trie | Data structure and relevant algorithms | Natural Language Processing library
kandi X-RAY | trie Summary
kandi X-RAY | trie Summary
Data structure and relevant algorithms for extremely fast prefix/fuzzy string searching.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of trie
trie Key Features
trie Examples and Code Snippets
Lines of Code : 27License : Permissive (MIT License)
Copydef delete(self, word: str) -> None:
"""
Deletes a word in a Trie
:param word: word to delete
:return: None
"""
def _delete(curr: TrieNode, word: str, index: int) -> bool:
if index == public static void main(String[] args) {
TrieNode root = getNode();
insert(root, "hello");
insert(root, "dog");
insert(root, "hell");
insert(root, "cat");
insert(root, "a");
insert(root, "hel"); static void suggestionsRec(TrieNode root, String currPrefix) {
// found a string in Trie with the given prefix
if (root.isWordEnd) {
System.out.println(currPrefix);
}
// All children struct node pointers Community Discussions
Trending Discussions on trie
QUESTION
I'm trying to implement trie search in flutter. And here's the entire trie.dart file.
The idea is something like this, say we have I have a list of recipe names:
...ANSWER
Answered 2021-Jun-04 at 19:34First, your TrieNode is using a List, which means you have to do a for-loop O(N) search for each char. It would be faster to use a Map.
(You could also use a 26D array, instead of a map, if you know that you'll only have English letters: [0] = 'A', [1] = 'B', ... [25] = 'Z')
Now I need to search using prefix so if the user searches for bur it'll show Burger. But if someone write Garlic Butter I need to Garlic Parmesan Butter. So, basically if the search query has multiple words I need to show the correct name.
bur is easy to do, as that's what a Trie data structure is for, but the garlic butter one is harder. You probably want to look into how to implement a fuzzy search or "did you mean...?" type algorithm:
However, maybe this is more complex than you want.
Here are some alternatives I thought of:
Option #1Change your TrieNode to store a String variable stating the "standard" word. So the final TrieNode of garlic parmesan butter and garlic butter would both have an instance variable that stores garlic butter (the main standard/common word you want to use).
Your TrieNode would be like this:
QUESTION
I'm working on a search that I can use with flutter_typeahed package.
I found a package called trie, but it doesn't have null safety so I thought of including that and contribute to the project as well as my own.
Since the entire trie file is quite big, I'm providing a link to pastebin.
This is the Search class that I've written:
ANSWER
Answered 2021-Jun-03 at 17:25I had to enable multidex. And I had to change the following things:
QUESTION
I got the following problem. When user register he will be on a page, where I show a message like check your Email account. And when user check his account and confirm his mail he automatically get to homepage. So far so good. But when user press register button an get mail and reload the page he get also inside homepage without confirm his mail. I trie this
...ANSWER
Answered 2021-Jun-03 at 10:56You should check email verification within you're sign-in method, and if the email was verified then return instance.signInWithEmailAndPassword.
full code:
QUESTION
As shown by the following two code snippets, the order of the chained assignment matters (i.e. node = node[ch] = {} is not equivalent to node[ch] = node = {}.
ANSWER
Answered 2021-Jun-02 at 22:03You basically answered your question at the end.
QUESTION
in my DashboarController I add a link to one of my routes in the configureMenuItems() function like this: yield MenuItem::linktoRoute('Title', 'icon', 'my_index', ['key' => 'value']);.
In my Controller I trie to access the parameter as usual like this:
ANSWER
Answered 2021-Jun-02 at 07:26The solution is: bin/console cache:clear followed by bin/console cache:warmup then you can find the parameters as GET-Parameters...
QUESTION
I was practicing on Leetcode and came across this problem.
Problem statement (link):
...ANSWER
Answered 2021-Jun-02 at 04:53There are some issues with this implementation. start and end should remain iterators, they could be used directly without adding/subtracting nums.begin() all the time. We're talking about non-negative integers, so provided they fit into normal int first bit is 0 anyway, so we should start with int bit = 30 to skip one needless iteration. For integers right as for iterators as well, start <= end - 1 is better compared as start < end. The code consists of one single function, there's absolutely no need for a class then, so one should prefer a namespace. Applying these changes, the code would look like this:
QUESTION
can sonmeone help me replace deprecated parse in script, tried with ast but still dont get any error but it dont return the result just error11.
I belive this is because parse is deprecated, so can anyone help replace it when evaluating?
When i trie to get a result it always return error11
I belive the error is because parse is depretacted but im not sure about that
...ANSWER
Answered 2021-May-25 at 15:35(1) Your sample code is not a complete script that shows the problem when run. A complete script would presumably include:
- An invocation of
calculate. - Definition or import of
displayandclear_allandparse.
If the problem is with the parse object, it's especially important to know what that is / how it's defined. (Mind you, there isn't enough info here to know that parse is indeed the problem.)
(2) As @rici indicated, if you change the except block to something like:
QUESTION
Let's say we're comparing the time complexity of search function in hashmap vs trie.
On a lot of resources I can find, the time complexities are described as Hashmap get: O(1) vs Trie search: O(k) where k is the length of chars in the string you want to search.
However, I find this a bit confusing. To me, this looks like the sample size "n" is defined differently in the two scenarios.
If we define n as the number of characters, and thus are interested in what's the complexity of this algorithm as the number of characters grow to infinity, wouldn't hashmap get also have a time complexity of O(k) due to its hash function?
On the other hand, if we define n as the number of words in the data structure, wouldn't the time complexity of Trie search also be O(1) since the search of the word doesn't depend on the number of words already stored in the Trie?
In the end, if we're doing an apple to apple comparison of time complexity, it looks to me like the time complexity of Hashmap get and Trie search would be the same.
What am I missing here?
...ANSWER
Answered 2021-May-23 at 15:59Yes, you are absolutely correct.
What you are missing is that statements about an algorithm's complexity can be based on whatever input terms you like. Outside of school, such statements are made to communicate, and you can make them to communicate whatever you want.
It's important to make sure that you are understood, though, so if there is a chance for confusion about how the n in O(n) is measured, or any assumed constraints on the input (like bounded string size), then you should just specify that explicitly.
QUESTION
Sorry in advance for any English error that I may commit. I have a school project for university and I have to use a trie to index words and have multiple functions to do multiple things. I'm programming in C. I have done a recursive function to find the biggest word in the trie and it is working. Here's the function:
...ANSWER
Answered 2021-May-20 at 02:31You can reuse your solution for biggest (longest - right?) word.
There would be 2 key differences:
- Using a function that returns min instead of max (Smallest instead of Biggest). You can either use a build-in min/max functions or implement your own.
- You need a special case for "-1" that means no result. It used to work fine for longest, since the max function skipped it automatically, but here this -1 will be returned as a shortest word right away, so you need an IF.
Code:
QUESTION
Hi I'm a beginner in C++ trying to implement basic trie structure .Someone please help. Any feedback is welcome.I'm getting a runtime error of
...ANSWER
Answered 2021-May-15 at 09:34In this constructor
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