mesterum

Keybase proof

I hereby claim:

• I am mesterum on github.
• I am mihaimanole (https://keybase.io/mihaimanole) on keybase.
• I have a public key ASDHxu9Z4qZpk6-ewRgIF4dQRTH0zhWcQ7o7zqP9xyEZFwo

To claim this, I am signing this object:

mesterum

function permAlone(str) {
  if(str=='') return 1
  const bag=new Map()
  for(const c of str){
    bag.set(c,(bag.get(c)||0)+1)
  }
  const essence=[]
  for(let v of bag.values()){
    essence[--v]=(essence[v]||0)+1
  }