Function pathToArray

code/solutions/22_3_optimizing.js:25–29

(path)

time(findPath_set);

function pathToArray(path) {
  let result = [];
  for (; path; path = path.via) result.unshift(path.at);
  return result;
}

function findPath_list(a, b) {
  let work = [{at: a, via: null}];