I want to print out a list formatted by level. What I have is an array of objects. Each object has a level eg 0, 1, 2. 0 being the uppermost and 2 being the innermost level. I want to print out the list with a indentation to each inner level So a list would look like this What my
Tag: arrays
Shuffle array of N letters and take M of them
I have an X array of objects “letter”:”frequency” and i’m trying to build a new Y array from the previous one made of frequency-times letters (for each present in X ary). Then my purpose is to shuffle Y ary and take just the z-first elements from that. n is an argument passed to …
Reconstructing an array of arrays and turning it into an array of objects with keys as the first array and values as the rest of the array items
The question itself is probably in need of editing but hear me out pls. I have this: I need it so that it will look like the one below: I have done something like this: To no avail and got something like this: This is not the desired output. If you can help me out – and our community! –
How to compare two arrays of strings, find all matches, when there might be a sentence?
This is a fun one – I am building a profanity checker! For the purposes of this exercise, let’s have an array of forbidden words, like so: const forbiddenWords = [‘apples’, ‘oranges’, ‘blue carrots’, ‘mushy green peas’]; Then I will have an input fie…
Dynamically group flattened JSON into nested JSON object
Suppose I have the following JSON array: And would like to convert it into the following multidimensional object in JavaScript (no Lodash): I figure I can do it with a foreach, but I’m trying to do it using the reduce function (HOPING that is the right one to use here) and just not getting the right syn…
Why is the split() method approx. 2x slower when the result is pushed to an array?
Consider the following code snippet: The output of this code is something like: Time needed: 2664ms. However, with the line // result.push(words); uncommented, the output is something like: Time needed: 4991ms. That’s approx. 2x slower (note that I’m measuring only the time needed by split(), but …
match two Arrays and keep order of both equal
So I have two arrays with the same length, but not entirely the same data as follows: Array2 only has element where num matches Array1 num Is there a way to make sure that these two arrays match their indexes even if the data does not match for example, their index will look like this This means they match by
How to randomly select array item without repeats and not have the program ask a question twice?
I am developing a trivia program, in which a user gets asked a question at random, and has to enter an answer. The program is telling the user whether they got the question right, and at the end alerts them of their score. Here is my code: I am unable to find a way to not have the program ask
Unable to push string into array
I am trying to learn EJS and make a blog but I cant seem to understand this error What I am trying to do is try to write some db response as an Object to an array then push it to the file. I am using replit DB Error that I am getting when I run the code: Answer First,
Best way of grouping array objects by multiple values in javascript.ES6
Good day developers Im wondering how I could group an array of objects of different values in specific sub-groups , where in each sub-group my contain objects with specific values according to the key queried. My array would be something like this And i would like to gather by the key make in a subgroup of na…