Converting deeply nested objects to array and single objects using JavaScript

Converting deeply nested objects to array and single objects using JavaScript
let student ={
name:'Ram',
address:{
personal:{
city:'Hapur',
pincode:125796,
},
office:{
city:'Noida',
pincode :201301
}
}
}

Array Output
[
{ student_name: 'Ram' },
{
student_address_personal_city: 'Hapur',
student_address_personal_pincode: 125796
},
{
student_address_office_city: 'Noida',
student_address_office_pincode: 201301
}
]

Object output
{
student_name: 'Ram',
student_address_personal_city: 'Hapur',
student_address_personal_pincode: 125796,
student_address_office_city: 'Noida',
student_address_office_pincode: 201301
}