function count(str) {
  let rs = {}
  str = str.replace(/\s/gi, '')
  for(let i=0,imax=str.length; i<imax; i++) {
    if (rs[str[i]] == null) {
      rs[str[i]] = 1
      continue
    }
    rs[str[i]]++
  }
  return rs
}