mhmdshorafa

Keybase proof

I hereby claim:

• I am mhmdshorafa on github.
• I am mhmdshorafa (https://keybase.io/mhmdshorafa) on keybase.
• I have a public key ASBzc4MvLPyrfflMidihv-B7AhgAU2qdK1vCeHfBfXWzKwo

To claim this, I am signing this object:

mhmdshorafa

const firstNonRepeatingLetter = (inputString) => {

  const letters = inputString.toLowerCase().split('');
  const firstNonRepeated = letters.map( letter => letters.filter( l => letter === l )).filter(repeated => repeated.length === 1);

  const nonRepeated = firstNonRepeated[0];
  if (nonRepeated === undefined) return '';
  else return inputString[letters.indexOf(nonRepeated[0])];
}
module.exports = firstNonRepeatingLetter;