# Multidimensional-array Questions

## What is the right way to work 2 static 2d arrays in C?

I have 2 static matrices. a[][n] and b[][m]. both n and m are pre defined and are not equal to each other. now how am i supposed to write

## Extra Printing of Chars in 2D Char Array

I'm trying to print out each element of a 2d char arrray in turn using this piece of code: #include <stdio.h> #include

## Printing the values of multidimensional arrays

greetings of the day i am a beginner to c. i am learning c. i am solving a problem of 2d

## Function cannot find failed memory allocation

Function int load(const char *filename, int ***ptr, enum save_format_t format) should load data from binary or text

## How do I return a struct with dynamic multidimensional arrays in C?

I have the following problem: "if i try to return a struct with a dynamic multidimensional array, i lose the data inside of that array. if i

## is there a way to check if a point in an array exists

I am making a code of conways game of life. i am using a function to check all the cells surrounding each alive cell and store how many times they

## What is the fastest way to see if the values from a 2 dimensional array are present in 3 other two dimensional arrays

I have 4 integer two dimensional arrays of the form: {{1,2,3},{1,2,3},{1,2,3}} the first 3(a,b,c) are of size/shape

## How to find frequency of every element row wise in a 2D matrix?

I am having a 2d-list as temp=[[0.5, 0.5, 2.0], [0.5, 0.5, -1.0, -1.0, -1.0], [0.5, 0.5, 2.0, -0.25], [-1.0, 2.0, -1.0, -1.0], [2.0, -1.0, -1.0,

## How to implement operator[][] for 1D arrays

Is there a way to implement an operator like [][] for a 1d array? i want to change the implementation of a 2d vector to a 1d

## (C) N x N Array of zeros

I am new to c and would like to create a n x n matrix of zeros (i.e., every element is zero). n is an integer. using matlab i managed to

## Insert multi rows in Adonisjs doesn't work

I have a problem when insert multi row using adonisjs. i have a form data in json array, when i'm try to insert this data using

## create repetition of elements multidimentional

I am trying to create a repetition of elements given array like this [1,2,10] to get the result by size

## Create multidimensional array in a loop with auto index

I'd like to create a multidimensional array using a loop in jquery/js. is it possible to use the next available key instead of setting it

## How to get max value of each index from multi dimentional array - javascript

This is my first time facing multidimensional array. i have an array of year like this: yeararr = [ [2019, 2018, ''],

## How to search for a string other than specify in array count values function?

I'm trying to create a chart using chart.js, however, there is a problem when trying to count values from an array. there is a key in array called

## Get all arrays in between two elements in a multidimensional array PHP

Please i need help. i have a php difficulty. this is multidimensional array and i want to get all the arrays in between "credit agreements

## Label nonzero neighbour values in 2d array

I have a 2d list consist of 0 and 1 like this a=[['0', '0', '1', '1', '0', '0', '0', '0',

## JS Tetris deleting line issue

Am learning javascript and for this i wanted to make a tetris game. till now i got a lot of functionality, but am stuck at the clearrow() (clear

## Counting adjacent -1s in a 2d array for a given row/column without checking positions out of bounds

Need help figuring out a different way to write count(), it's something that will add to my code here: public class grid {

## Compare multidimensional arrays and find min/max values in JavaScript

In my javascript game i'm saving scores in a multidimensional array (in a local storage). i'm saving a themeid, an identifier

## For loop in Jinja2 splitting the chars in nested list, instead of returning whole of nested list

My doubts list is [['a','b','this is a sentence']] my html (jinja) is {% for x in doubts %} {{ x }} {% endfor %}

## best practice for multidimensional arrays in python

Suppose i have a collection of objects which i wish to save in python, say, a list of numbers: [0.12, 0.85, 0.11, 0.12], [0.23, 0.52, 0.10, 0.19],

## How do I assign colors to containers from a list of colors?

How do i assign colors to my row from a list of colors here is the code. import 'dart:math'; import

## How to set defaultValue of a radioGroup from a nested Array object in React state?

I have this array object in state called formrating formrating:array[22] 0: {…} condid: "c2.1(a)" rate: "n/a" 1: {…}

## Determining if a knight can pass through all cells in a 2d array - if so print board

I need an advice regarding this problem called "knight path". given an n*n board whose cells are initialized to 0, i need to determine,

## Typescript flatten complex nested array

I'm still pretty new to typescript so i've been looking at all the provided solutions but i'm still stuck with a complex nested array. i have the

## Flutter Define Map Multi-dimensional structure including Key Names

I'm trying to create a custom navigation widget. this essentially involves a map where the key is the route. one's the key is defined instead of

## Export CSV format with multidimensional array

I am trying to export multidimensional array to csv format with below code, i am getting few errors.. below is the array

## Undefined array key in nested array loop php

I have been trying but i don't know how i can create something like that dynamically without this warnings, \$response[\$item[0]][\$item[1]] +=

## Find Array[1D] in Array[2D] and return index

Have any way can find a match index in array[2d] faster? i know compare 1 by 1 can make this ok, but i don't wanted to. i tried this one,

## Python matrices without numpy

I'm trying to learn how to operate on python matrices but it's difficult since online i'm finding nothing but numpy library and it is forbidden to

## Repeat function as long as fail condition is not met

I am creating a python roguelike which utilises proceduraly created dungeon maps. i decided to achieve this using pythons' lists. i created a 2d

## How to force numpy to interpret 2 dimensional array as 1 dimensional

My problem: import numpy as np import itertools bla = list(itertools.product([0, 1], repeat=3)) [(0, 0, 0), (0, 0, 1), (0, 1, 0),

## How to make multi-dementional arrays with array lists wiht axios and vue js

I am quite new to the axios and javascript and i am so confused with making multi-dimentional array. 1. i want my data to look like :

## JS: Convert dot string array to object tree

I have a string array like this and trying to build a tree hierarch grouped with . notation. i tried using recursive function and "set" function

## Insert list to a 2D list at a specific index

I didn't find a lot about inserting a list to a 2d list. i tried to use append (which doesn't work because append can't append at specific

## How to make string from multidimential array values using parent child values ? - Dynamic SQL query generator

This is dynamic array data. i have mention below sample data from this i need to generate sql query im using vuejs +

## Show all the data from a nested array of objects in React Native

This is my data in a state called childdata: {} object { "11-5-2019": object { "18:32": object { "color": "brown",

## Getting "corrupted size vs. prev_size" in C++

I'm trying to create a program to print a 2d matrix after reading in data from a file. my program works fine if the 2d matrix is a square

## C: How can I create a 2d array that hold 2d arrays?

For example i have generated a "zone" of 1s and 0s in a 2x2 2d array . but i need to store 9 of these zones to access whenever from

## How to access dynamically value of an array from API Response in PHP?

I'm not really good with array, and need some help, i need to specifically retrieve only "value" from this given array, for example of

## How to create a path based on array with multiple children

So, basically what i'm trying to do is getting combinations of the array children, for example i got the array:

## How to return True if two-dimensional array in python has at least one True

I'm trying to write a code which checks if 2d-array (consists of only boolean) has at least one true and return true if there is at least one

## Multidimensional array printing wrong values in cpp

I've been struggling with a simple class representing a matrix in c++. instead of using a multidimensional array, i've decided to use a flat array

## is it possible to define multidim arrays with #define directive in pure C?

I want to manage my packs of string constants separately from the computational code. i want to do it in separate file.

## plotting an mXnXk matrix as a 3d model in python

I have a matrix generated by parsing a file the numpy array is the size 101x101x41 and each entry has a value which represents the magnitude at

## Sorting 2D numpy array using indices returned from np.argsort()

When we have a 1d numpy array, we can sort it the following way: >>> temp = np.random.randint(1,10, 10) >>> temp

## How to extract an array of same dimension as the original array meeting a condition?

The question sounds very basic. but when i try to use where or boolean conditions on numpy arrays, it always returns a

## Numpy trim_zeros in 2D or 3D

How to remove leading / trailing zeros from a numpy array?

## reshape 4D numpy Array of the image is changing the images figures

I want to change the 4d array of images from (50, 100, 100, 128) to (50,128, 100, 100) but when i plot the image after reshaping it the image was

## What is the difference between numpyArr[:,:,:,c] and numpyArr[...,c]?

I've beeen taking deep learning course on coursera. while i was doing my assignment i saw one piece of code on the github. 1.

## How to extract data from nested json array?

Every time user submits data, i receive it in nested json array of data and i need extract that data. so, sometimes it can be from

## Equivalent of R array in Python

I'm trying to find the python equivalent to r's array function is when called in the following manner. array(rep(1,

## How to calculate the mean of "n" outputs which I got after using for loop and assign it to a variable?

I used a for loop to calculate a series of thresholds for diff segments in an image. >>crdf [(11, 6), (11, 7), (11, 11),

## python multidimensional array create with explicit size

The value of index 1 changes in all rows in method1. how should i create an ar1 array correctly? method1:

## javascript - create multidimensional array from another multidimensional array

I need to generate a multidimensional array from a multidimensional array. for example, my array: var codes = [ ['2',

## Merging arrays and plots

Let's say i have 2 arrays like these: x1 = [ 1.2, 1.8, 2.3, 4.5, 20.0] y1 = [10.3, 11.8, 12.3, 11.5, 11.5]

## Laravel 5.3 creating multi dimention array from DB results

Reuqirment my db has a table named categories and also a table named products

## Why does model.fit require two-dimensional tensors? And why does model.predict not accept scalar tensors?

I was learning tensorflow.js when i noticed that model.fit has to take in two arguments, input and output, and some configurations. but the inputs

## Some php coding about array_search with unexpected result

I want to find a key value from a array, if not exist then insert a array set into a array list if i search blue, it will return y but if

## How to group/club elements in a 2D list based on the 1D elements belonging to another 2D list?

I'm new to python and i have a question on involving data structures and algorithms(which are essential skills that a programmer should have)

## Search an object from nested n level array / JSON object in java script

I have a json object with a nested list. each element from this list can also be a nested list. the depth of each element can go up to n-levels. i

## How to add multiple array elements into a transposed structure?

I have these arrays \$months = ['jan', 'feb']; \$cashuniform = [2000, 1200]; \$cashfee =

## Python : Map over multidimensional dictionary using a list

I need a function to change values within a nested dictionary, by crawling a list instead of the usual dic[key1][key2] = value

## Storing Results in n*m Matrix in Python

I want to store the results into a matrix of 4*9. i have posted my code and i am using nested for loop. i am having difficulties in how

## Only the first array inside a 2D array being updated by function

I have written this code below to create a randomised sudoku puzzle grid: import time import random import math sudoline =

## Error when parsing FedEx Multidimensional Arrays with N-Level in Laravel

Fedex web services return the following multidimensional array: array(2) { ["meta"]=> array(2) { ["code"]=>

## calculate the index of column in javascript

I want to get the summation of 2d array per column, and i don't know why it's adding everything. let vals = [ [1, 1, 1], [1, 1,

## How to replace some values in multidimentional array with another array

I try to replace some value in a multidimensional array with another array with the same key but it turns out to replace all

## React Native: Sort multidimensional array

I would like to sort my array by a value which is contained inside the array of the array. this is my array which i fetch from an api:

## Indexing multidimensional numpy array inside numba's jitclass

I'm trying to insert a small multidimensional array into a larger one inside a numba jitclass. the small array is set specific positions of the

## Recursion on subarrays with "child" key

I have array of arrays - tree structure of main menu. i try to find in this tree one node with needed slug and return this node with

## How to merge array elements with comma separated value without using explode function

I want to merge array elements into comma separated values. this is an array array:12 [ 0 => array:2 [ "name" =>

## How to force user to enter a different number each time in a given range in Python?

My question is related to book "starting out with python" (3rd edition) by tony gaddis. it is chapter 7 question 11. let me excerpt question for

## How to Access Last Index of Nested Array

I'm trying to figure out how to access the last index of a nested array. the array i am working with is provided by an api call and is very large

## How can I setState for the nested array and objects?

I need to save a data in this format: categoryselect: 0: { { question: [],

## Dynamic multidemension Array with Date keys in Javascript

How do i loop the newly created dynamic array by key and sub array. var days = new array(); \$.each(json_object, function(r, row)

## Trying to Remove Nesting from Json Array in PHP

As you can see i have a json array with multiple elements, and i have been trying to remove the nesting ("demarche") element and i want

## Matrix definition, adding two different data type matrices

I'm writing my own matrix type version in c programming language. i'm also trying to use information hiding, so i have my code divided into two

## looping into nested array and modify data

As per the above structure, all the types are having text-1. i wanted only the first occurrence to be in text-1

## Array that store color maps flutter

¿how can we create an array to store colors in dart, with this structure style? "1":{ "a":

## How to remove multiple elements from arrays of an array using GAS?

The problem i have a dataset encompassing empty columns. this dataset is obtained by getvalues() of a defined

## How To get keys(index) of collection in laravel

I am using laravel and i have one collection and there are some collection in it so i want to get index of each collection my collection

## Count duplicate data and store it to a variable

I want to count the duplicated data in an array and store it to a variable. i managed to count it using array_count_values() but i

## Taking Input in a 3D array

I am beginner in python. this is a code i had written in c. i am trying to convert it to python. int

## Analog to .* for tensor/ vector multiplications in matlab

I am generalizing a 1-d numerical method to 2-d and have run into an inconvenience. i was previously scaling each row in an array by using b.*a,

## Get closest coordinate in 2D array

Coordinates = [(-225.0, -299.5), (-150.0, 75.5), (0.0, 0.0), (225.0, 300.5)] xy = (-222.4, -204.5) what is the best way

## How to get the common values from 2 Laravel collections

I have 2 collections in laravel, and i want only common values in my \$result object. i see that

## php - check multidimensional array for values that exists in more than 1 subarray

Following simplified multidimensional array given: \$input = array ( [arr1] => array ( [0] => jan2016

## Insert Object inside array of array

I need to display 3 objects inside of 1 page of carousel. maximum of 3 object per page. how will i do that using loop? or anything from

## How to fetch data from associative array in blade?

I am trying to fetch keys of array separately and values separately. actual output: [ "it" => [ "programming"

## how to use queries on 2 relationships in laravel

I have model with 2 relationships. i want to add where condition on each relationship. for example show me a room that date is

## Retrieve selected columns of a 2 dimensional array

I need to retrieve selected columns of a 2 dimensional array, i have a 2 dimensional array var indexes = [2,3,5]; var data = [

## Structuring data in this multidimensional-array

I am processing images in python and for a specific purpose i've been asked to "make numpy arrays with these dimensions: 32x3x512x512 (patches x

## how to implement a search by object by value if each of them is invested in years and months

I made a website and i just can't manage to search by multidimensional array / object (i don’t know what the difference is). before

## How to count the amount of keys in a multidimensional array

I have the following multidimensional array : meeting[\$loop->index][person]are checkboxes

## How to show data from array reactjs?

I need to get all values for the one city from multi dimensional array, not for all cities :) i really can't understand how to write it in the