[JS] Isograms 2020. 11. 6. 문제 An isogram is a word that has no repeating letters, consecutive or non-consecutive. Implement a function that determines whether a string that contains only letters is an isogram. Assume the empty string is an isogram. Ignore letter case. isIsogram('Dermatoglyphics') == true isIsogram('aba') == false isIsogram('moOse') == false // -- ignore letter case 내가 푼 방식 2020.10.30 (15m) function isIsog..