-[ ] 입출력 예!
function solution(numbers) {
let answer=[];
for(let i=0; i<numbers.length; i++){
for(let j=0; j<numbers.length; j++){
if(i!==j){
answer.push(numbers[i]*numbers[j])
}
}
}
return Math.max(...answer)
}
function solution(numbers) {
const[first,second,...three]=number.sort((a,b)=>b-a);
return first*second;
}