You are given a week's rainfall data of 5 cities Using the data write a function rainDance which returns an array of objects each object containing city name and average rainfall.
Input Format
[ { name: "Roorkee", rainfall: [5, 6, 5, 5, 4, 7, 8] }, { name: "Pauri", rainfall: [3, 3, 3, 1, 2, 2, 2] }, ]
Output Format
[ { name: "Roorkee", avgRainfall: 5.714285714285714 }, { name: "Pauri", avgRainfall: 2.2857142857142856 }, ]
Constraints
Nil
Example
Input
{ "name": "Delhi", "rainfall": [2.3, 4, 3.1, 5.5, 1.1, 1.2, 7] }
{ "name": "Noida", "rainfall": [6.3, 0, 0.1, 3.5, 1, 2.6, 0.7] }
{ "name": "Dehradun", "rainfall": [12, 5.6, 3.1, 0.55, 11, 16.2, 19] }
{ "name": "Nanital", "rainfall": [8, 1.4, 0.61, 15.5, 6.6, 2, 9.82] }
Output
[
{ name: ''Delhi'', avgRainfall: 3.457142857142857 },
{ name: ''Noida'', avgRainfall: 2.028571428571428 },
{ name: ''Dehradun'', avgRainfall: 9.635714285714286 },
{ name: ''Nanital'', avgRainfall: 6.275714285714286 }
]