Answer 1

//最后有啥办法不循环么，直接截取放最后
var arr = [0,1,0,3,12,0,89,0,8,0] ;

function ss (arr){
    arr.sort((a,b)=>{
        return a-b
    });
    let len = arr.lastIndexOf(0) +1;
    arr.splice(0,len);
    for (let i=0;i<len;i++){
        arr.push(0)
    }
    console.log(arr)
}
ss(arr)