@charlespalmerbf/array-rows

The provided Javascript library, arrayRows, takes an array and a number as input parameters and returns a new array with the original array divided into smaller arrays, each containing a specified number of elements.

Installation

npm install @charlespalmerbf/array-rows

Usage

node

const arrayRows = require("array-rows");

console.log(arrayRows([1, 2, 3, 4, 5, 6, 7, 8], 2)); //[ [ 1, 2 ], [ 3, 4 ], [ 5, 6 ], [ 7, 8 ] ]
console.log(arrayRows(["Charles", "Harry", "Steve"], 2)); //[ [ 'Charles', 'Harry' ], [ 'Steve' ] ]

Build

npm run build

Contribute

If you would like to contribute, you are welcome. Clone repository and open pull request.

About

The provided function, arrayRows, takes an array and a number as input parameters and returns a new array with the original array divided into smaller arrays, each containing a specified number of elements.

Here's a breakdown of how the function works:

1. It initializes two empty arrays: res and copy.

   • res will store the final result, i.e., the array of smaller arrays.
   • copy is a copy of the input array to avoid modifying the original array.

2. It defines an empty array called slice. This array will temporarily hold elements from copy until it reaches the specified number.

3. It enters a while loop that runs as long as copy still has elements.

4. Inside the loop:

   • It removes the first element from copy using copy.shift() and adds it to the slice array using slice.push().
   • It checks if the length of slice has reached the specified num value.
     • If the length is equal to num, it means that slice has collected enough elements. In this case, it adds slice to the res array using res.push(slice) and resets slice to an empty array.
     • If the length is not equal to num, it continues to the next iteration of the loop, collecting more elements.

5. After the while loop ends, it checks if there are any remaining elements in slice.

   • If slice is not empty, it means there are elements left that didn't form a complete smaller array of num elements. In this case, it adds slice to the res array.

6. Finally, it returns the res array, which contains the smaller arrays created from the original array.

In summary, the arrayRows function takes an array and a number, divides the array into smaller arrays of the specified size, and returns an array of these smaller arrays.