export function commonChars(a: string, b: string): number {
  let count = 0
  let isMoreLarge = a.length > b.length ? a.toLowerCase().split('') : b.toLowerCase().split('')
  let isLessLarge = a.length > b.length ? b.toLowerCase().split('') : a.toLowerCase().split('')
  for(let word of isMoreLarge) {
    if(isLessLarge.includes(word)){
      count++
    }
  }

  return count
  }