Create a bar chart from json
Problem :
Given a JSON data structure with key representing age and value representing the number of people with that age. For example,
{
25: 55,
26: 45,
27: 10,
28: 20,
30: 1,
31: 1,
32: 3,
33: 10,
60: 10,
64: 5,
65: 5
}
startingAge = 20, endingAge = 65, ageInterval = 5. Create a graph which can plot in
| Age range | # People |
|---|---|
| [20, 25) | 0 |
| [25, 30) | 130 |
| [30, 35) | 15 |
| … | … |
| [55, 60) | 15 |
| [60, 65) | 5 |
Logic :
- Find the number of buckets required based on the start value, end value and age interval
- Iterate over JSON one key at a time
- Find out which bucket that key should belong
- Add the value of it to the relevant bucket
