decipher the string using various operators

Is it possible to explode a string using different operators?

I am trying to extract every code (of varying sizes) between the brackets [ and ]

Here are some examples of the different possibilities:

const codes = [
   '[5018902847][592][50189272809][5089113805]',
   '[3898]',
   '[375001833][3475001021]',
    '',
]

And this is what I need:

[5018902847, 592, 50189272809, 5089113805]
[3898]
[375001833, 3475001021]
null // because code is empty

My initial solution looks like this :

codes.map(code => {
    const res = code.split('[ ' || '][' || ']');
    console.log(res)
})

However, the result does not match my expectation, for example:

[
  ' [5',
  '51889',
  '28475][5',
  '51889424192][5',
  '518892728',
  '9][5',
  '518891138',
  '5]'
]
javascriptarraysstringalgorithm

Answer №1

You might want to consider utilizing the String.prototype.match() method in JavaScript

const values = [
  "[5018902847][592][50189272809][5089113805]",
  "[3898]",
  "[375001833][3475001021]",
  "",
]

const result = values.map((value) => {
  const extractedValues = value.match(/\d+/g)
  return extractedValues && extractedValues.map(Number)
})

console.log(result)

Answer №2

If you're looking to split a string using a regex separator, here's an example:

> '[5018902847][592][50189272809][5089113805]'.split(/[\[\]]/)
[
  '',
  '5018902847',
  '',
  '592',
  '',
  '50189272809',
  '',
  '5089113805',
  ''
]

To convert your codes array into a specific format, you can use this concise one-liner:

const codes = [
   '[5018902847][592][50189272809][5089113805]',
   '[3898]',
   '[375001833][3475001021]',
    '',
]
const cleanedCodes = codes.map(code => code.split(/[\[\]]/).filter(s => s.length)).filter(a => a.length)
console.log(cleanedCodes);
/*
 * Output will be: [
 *  [ '5018902847', '592', '50189272809', '5089113805' ],
 *  [ '3898' ],
 *  [ '375001833', '3475001021' ]
 * ]
 *
 */

Answer №3

This method does not require the use of match (taken from @hgb123's solution).

const codes = [
  "[5018902847][592][50189272809][5089113805]",
  "[3898]",
  "[375001833][3475001021]",
  "",
]

const result = codes.map((code) => {
  var extracted = code.split(']').filter(Boolean).map(x => {return x.replace("[","");})
  return extracted && extracted.map(Number)
})

console.log(result)

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