First Round Interview Question:
1. Highest Salary on given dictionary data, I have used pandas.
data = {'name': ['Virat', 'Ronaldo', 'Rohit'],
'salary': [50000, 60000, 55000],
'date_joined': ['2018-01-01', '2017-01-01', '2019-01-01']}
2. Average Grades class wise,
students_data = [
{"name": "Alice", "class": "10th", "grades": [85, 90, 78]},
{"name": "Bob", "class": "10th", "grades": [70, 88]},
{"name": "Charlie", "class": "9th", "grades": []},
{"name": "David", "class": "10th", "grades": [95, 100, 92, 88]},
{"name": "Eve", "class": "9th", "grades": [80, 85, 88]}
]