// write missing part of the code to sort array in decreasing order of age.
const students = [
  {name: "Shyama", age: 15},
  {name: "Neema", age: 12},
  {name: "Reema", age: 14},
{name: "Hema", age: 13}
];

function sortByDecreasingAge (a, b) {
  return ;
}
students.sort(sortByDecreasingAge);