프로그래머스 Lv2 뉴스 클러스터링

var arr1 = [];
var arr2 = [];
var max = 0;
var min = 0;
str1 = str1.toUpperCase();
str2 = str2.toUpperCase();
for(let i=0;i<str1.length-1;i++){
var x= str1[i]+str1[i+1]
if(x.match(/[A-Z]{2,}/g)){
arr1.push(x);
}
};
for(let i=0;i<str2.length-1;i++){
var x =str2[i]+str2[i+1];
if(x.match(/[A-Z]{2,}/g)){
arr2.push(x);
}
}
const set = new Set([...arr1,...arr2]);
set.forEach(element => {
var a1 = arr1.filter(t=>t==element).length;
var a2 = arr2.filter(t=>t==element).length;
max += Math.max(a1,a2);
min += Math.min(a1,a2);
});