JSFiddle - React, Tailwind, and code Playground

JavaScript

var distance=new Array();
distance[0]=150;
distance[1]=100;
distance[2]=50;
distance[3]=70;

var i=-1;
temp=new Array();
while(distance[++i]){
    temp[i]=new Array();
    temp[i][0]=i;
    temp[i][1]=distance[i];
}

function indexsort(a,b){
    return (a[1]>b[1])?1:-1;
}

temp.sort(indexsort);
max=temp.length-1;
alert("indexe distance mini "+temp[0][0]+"\nindexe distance max "+temp[max][0])