sorting the caps and lowercase order 2

function capitalsFirst(str){
  let re = new RegExp(/[\d+!]/, 'ig');
  let words = str.split(' ');
  let lowercaseArr = [];
  let capArr = words.reduce((rtnArr, word)=>{
    if(re.test(word[0])){
      console.log(word);
    }
    else if(word.charAt(0) === word.charAt(0).toUpperCase()){
      rtnArr.push(word);
    }else{
      lowercaseArr.push(word);
    }
    return rtnArr;
  }, []);
  return capArr.concat(lowercaseArr).join(' ');
}