Let’s say we have a 2D-boolean Array as a presentation of a maze, the size of the Array is not fixed and random. The walls are depicted as true: The exit of the maze is at a fixed Index. How can I check wether the traversion has reached this certain index or not? My idea was to create an int[
Tag: indexing
Given a sum of two elements in an int array, how to find their smallest indexes?
I want to return an array of 2 integers, containing the indexes of a pair of integers in the array whose sum is k. I have done this method : With previous array and sum it works & returns: For example with this: I should have: How can I, in case there are several possible pairs whose sum is equal
How to get indexes of char in the string
I want to find vowels positions in the string. How can I make shorter this code? I tried contains and indexOf method but couldn’t do it. Answer I assume you want to get m2rh5b7 from your input string Merhaba based on your code, then the below works fine, Or if you want just position of the vowels positi…
In Apache Solr How to retrieve deleted documents
Whenever I am indexing Documents using solr ,my core deleted documents count also getting increased .I want to see the documents which are getting deleted.
Lucene LongPoint Range search doesn’t work
I am using Lucene 8.2.0 in Java 11. I am trying to index a Long value so that I can filter by it using a range query, for example like so: +my_range_field:[1 TO 200]. However, any variant of that, even my_range_field:[* TO *], returns 0 results in this minimal example. As soon as I remove the + from it to
Bulk upload CSV file into Elasticsearch using JavaAPI
I want to bulk upload the csv file into Elasticsearch using JAVA API (without using logstash). Elasticsearch version – 6.6 I have tried the below program using Jackson format to get source Map for IndexRequest. Because I can’t predefined the POJO variables. So I used dynamic Map from CSV file I go…
How to find the index of an element in an array in Java?
I am looking to find the index of a given element, knowing its contents, in Java. I tried the following example, which does not work: Can anyone please explain what is wrong with this and what I need to do to fix it? Answer In this case, you could create e new String from your array of chars and then