Task: Transform sentence to n-gram and remove all punctuation

Tests:

Input: ngram(‘Name, + other ~ name!’, 1)

Result: [‘Name’, ‘other’, ‘name’]

Input: ngram(‘Name, + other ~ name!’, 2)

Result: [‘Name other’, ‘other name’]

Input: ngram(‘Name, + other ~ name!’, 10)

Result: [‘Name other name’]

Code:

  function ngram(data, order) {     const regex = /[^A-Za-z0-9_]/g     let ngramsArray = []      data = data       .replace(regex, ' ')       .split(' ')       .filter(element => element.length > 0)      if (order > data.length) {       order = data.length     }      for (let i = 0; i < data.length - (order - 1); i++) {       let subNgramsArray = []        for (let j = 0; j < order; j++) {         subNgramsArray.push(data[i + j])       }        ngramsArray = [...ngramsArray, subNgramsArray.join(' ')]     }      return ngramsArray   }