JSFiddle - React, Tailwind, and code Playground
JavaScript
function lastChair(numberOfChairs) {
var index = 0,
chairs = _.range(numberOfChairs);
while (chairs.length > 1) {
chairs.splice(index, 1)
index = ++index % chairs.length;
}
return chairs[0] + 1;
}
console.log('last chair is', lastChair(100));