I need some help finding symmetric difference of a multi dimensional array, and a simple array. The first value in each inner array of the multidimensional array cells is the index that compares to the simple array. So the result should be something like: I need to return an array that has both difference of …
Tag: multidimensional-array
Creating 2d array from section of other 2d array Javascript
I am trying to cut a section of a 2d array specified by x, y and w, h. an example of an array I’m trying to cut would be so if i called snapshot(2, 1, 4, 2) my desired output would be So far I can cut the section and return a new array successfully but only if my Width
How to access the ith column of a Javascript Multidimensional Array?
For e.g if the array looks like this I want to get the 2nd value of each array inside example array e.g values like this: Answer You can use .map() to construct the desired output. You must be careful about the index however i.e data in that index should exists in the input array otherwise you will get undefi…
Break array of objects into 2dimensional array
I need to break an array of objects into a 2-dimensional array where 1-dimensional arrays would consist of objects which have their attributes ‘for’ and ‘to’ being not overlapping intervals. Example: Given array arr1 I wish to receive arr2 How it should work: We loop through the arr1. …
How to get the position information of a value of an array inside loop
I need to get the information of a position of an array inside the loop. I’ve two variables. So, the array would be look like this according to the value of i (in loop): Now, I’ve to produce an array of information. Detailed architecture of this is here: I wan’t to prepare this positions arr…
Create N dimensional grid of points in JavaScript
I know there are similar questions out there (the closest one I found was this JavaScript; n-dimensional array creation) but most one them are in Python and even this one I found I tried to implement in my code and It didn’t work. So I want to create a function createGrid(L,n) that take as parameters tw…
Javascript check if value exists in 2d array update else create
I’m creating a 2d array for a Google pie chart The array has to be in the format What I’m trying to get is a function where the category is passed to the function. If the category exists the value increments with 1 (value++). If it doesn’t, the record should be created with a value of 1. The…
Function which is swapping Elements in an Array of Arrays, returns undefined at the specific Indexes
I have an Array of Arrays. My Array is called splitarr[Array2[],Array1[],Array0[],Array3[]…]. It is not ordered correctly from Index Zero to index 2. So I want to swap splitarr that it looks more like this => splitarr[Array0[],Array1[],Array2[],Array3[]…]. However my code does not seem to work.…
Watching parent with prop doesn’t update during for loop
I have 2 components – <my-component> and <grand-child-comp>. In my root there is a multidimensional object and my component watches it with prop. In Vue debugger, I can see that my-component is getting and watching accountTypes object successfully. However, when trying to use it in my-compon…
Get last value from an array using Google Apps Script
I need to get last value from an array and I keep getting this error when I use slice TypeError: Cannot find function slice in object Sun Jul 23 2017 00:00:00 GMT+0100 (BST). (line 15, file If I use length -1 I get NaN. This is the code I am using it. … and this is the table full table