Create a new array dynamically whenever there is a number in Input Array JavaScript

Question

I am stuck in a problem. I have user input of array which contains number as well as strings like:-

 3
apple
Lemmon
sugar
2
Ginger
Ice

This is the data that I am receiving. Now I have to manipulate the data as such that. "Whenever it encounters a number it creates a new array with exactly the number values in array".

Desired Output

Array1 ["apple", "Lemmon", "sugar"]
Array2 ["Ginger", "ice"]

Any Idea will help. Thanks in advance

You can simply detect if the input is a number and create a new array. There are several ways to do this - stackoverflow.com/questions/175739/… — DannyMoshe
– DannyMoshe, Commented Apr 30, 2021 at 22:01
Like this array can extend and I want it should go in a new array everytime there is a number encountered. Can you please suggest one way to do it? — Enigmatic
– Enigmatic, Commented Apr 30, 2021 at 22:18

Alfred C. · Accepted Answer · 2021-04-30 22:31:23Z

2

It depends on how you get the info. But this is the first idea I got to quickly solve your issue:

function makeArray(...info) {
  stringArray = [];
  i = -1;
  info.forEach(item => {
    console.log(item);
    if (Number(item)) {
      stringArray.push([]);
      i+=1;
    } else stringArray[i].push(item);
  });
  return stringArray;
}

makeArray(3, 'apple', 'Lemmon', 'sugar', 2, 'Ginger', 'Ice');

If you log that you get:

[ [ 'apple', 'Lemmon', 'sugar' ], [ 'Ginger', 'Ice' ] ]

It makes a 2D array. And from there maybe you can use it like that or just sepparate it easily.

answered Apr 30, 2021 at 22:31

Alfred C.

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4 Comments

Rafael Buzatto de Campos Over a year ago

nice solution! just a tip, it would be good to define your variables with let -> let i = -1; let stringArray = [];

Alfred C. Over a year ago

jaja, totally right! For doing it quickly I forgot that, and even left a console.log there. Thanks for pointing it out @buzatto

Rafael Buzatto de Campos Over a year ago

that's normal, it happens to all of us. you can always edit your answer to fix something or add more context. welcome to the forum!

Enigmatic Over a year ago

Great solution @AlfredoC... That was a great Help.

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