/* eslint-disable no-unused-vars */
const users = [
    {
        name: 'A',
        age: 20,
        isAdmin: false,
    },
    {
        name: 'B',
        age: 15,
        isAdmin: true,
    },
    {
        name: 'C',
        age: 35,
        isAdmin: false,
    },
    {
        name: 'D',
        age: 61,
        isAdmin: true,
    },
    {
        name: 'E',
        age: 61,
        isAdmin: true,
    },
]

// 1) remove the age property

// 2) add property isAdminUnder18 (boolean)

// 3) add property isAdminUnder18: true only if (isAdmin === true && age < 18) - else leave the object unchanged
// -----

// 4) get only the users that are selected
const selectedUserNames = ['B', 'C', 'D', 'E']

// 5) get the sum of the ages of the admins that are selected

// 6) if the sum from 5) is greater than 75 -> return it. else return an array of the ages

// 7) same as 6) but return an array without duplicates ([15, 61] instead of [15, 61, 61])

// 8) same as 6) but return an array of the selected admins instead of their ages

// 9) same as 8) but return an array containing only admins with different ages (if there is already an admin of age 61, you cannot add another)

// 10) groupBy age