function string2int(s) {
    var arr = [];
    for(let c of s){
     arr.push(c)；
    }

return arr.map(function(x){return x-'0'})
          .reduce(function(x,y{return x*10+y})；
}

function normalize(arr)
    return arr.map(function(x){return x[0].toUpperCase()
                +x.substr(1).toLowerCase()})