class List {
    constructor() {
        this.list=[];
        this.size=0;
    }

    add(element){
        this.list.push(element);
        this.size+=1;
        return this.list.sort((a,b)=>a-b);
    }
    remove(index){
        if(this.list[index]!==undefined){
            this.list.splice(index,1);
            this.size--;
        }else {
            throw new Error()

        }
        return this.list.sort((a,b)=>a-b);
    }

    get(index){
        if(this.list[index]!==undefined){
            return this.list[index];
        }else {
            throw new Error();
        }
    }
}