JS reverse int em ordem decrescente
//Method 2
//rearrange the digits to create the highest possible number
function descendingOrder(n){
let reversed = n.toString().split("").sort((a, b) => b - a).join('');
return parseInt(reversed) * Math.sign(n);
}
console.log(descendingOrder(463)); // result: 643
console.log(descendingOrder(223744)); // result: 744322
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