const people = [
  { name: "bob", age: "21" },
  { name: "mary", age: "17" },
  { name: "jill", age: "35" },
  { name: "jake", age: "52" }
];

// return: name of oldest person

const getOldest = people => {
    // your code here
}


getOldest(people)



// return: average age

const getAvgAge = people  => {
    // your code here
}

getAvgAge(people)


// return: most frequent character

function getMostFreqChar(str) {
// your code here
}

getMostFreqChar('acccccccbbbbbbbbb')