제일 작은 수 제거하기

function solution(arr) {
    var answer = [];
    answer = arr.length ==1 ? 
    [-1] : arr.filter((x)=>x!== Math.min(...arr));
    return answer;
}

function solution(){
    if(arr.length===1){
        arr = [-1];
    }else {
        //arr.splice(arr.indexOf(Math.min(...arr)),1);
        let arrmin = Math.min(...arr);
        let minIndex = arr.indexOf(arrmin);
        // arr.splice(start,num)
        arr.splice(minIndex,1);
    }
    return arr;
}