S
function isIsogram (str) {
const cut = str.replace('-', '')
return new Set(cut).size === cut.length
}

Size: a a a
S
function isIsogram (str) {
const cut = str.replace('-', '')
return new Set(cut).size === cut.length
}
DE
DE
DE
DE
J
DE
J
DE
J
DE
DE
J
DE
IV
J
a
DE
J
a