Visualize API Data with Charts | Dataford Interview Questions

Build a data visualization using chart components for data coming from an API.

Implement build_chart_data(records) to convert API records into a chart-ready object. Each record contains an ISO timestamp and numeric value; combine duplicate timestamps by summing their values and sort labels chronologically. Return {"labels": [...], "datasets": [{"label": "value", "data": [...] }]}.

Constraints

0 <= records.length <= 10^4
Each record contains a timestamp string in ISO YYYY-MM-DD format
Each value is an integer
The output contains one dataset labeled value
Timestamps may appear more than once

Function Signature

def build_chart_data(records):

Your question is Visualize API Data with Charts. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Build a data visualization using chart components for data coming from an API.

Constraints

0 <= records.length <= 10^4
Each record contains a timestamp string in ISO YYYY-MM-DD format
Each value is an integer
The output contains one dataset labeled value
Timestamps may appear more than once

Function Signature

def build_chart_data(records):

Your question is Visualize API Data with Charts. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.