Created
October 31, 2020 23:21
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| /** | |
| * @param {string} s the sentence | |
| * @returns {number} amount of double letter words in the given sentence | |
| */ | |
| function doubleLetterWords(s) { | |
| return s.split(' ').map(w => w.match(/(.)\1/m)?1:0).reduce((a,b)=>a+b) | |
| } | |
| // e.g | |
| // doubleLetterWords("letter cool all rofl") => 3 |
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