Top Campaigns by Donor Volume | Dataford Interview Questions

Write a function that takes an array of donor transactions and groups them by campaign, returning the top three campaigns by total volume on Givzey.

Each transaction is a dictionary with campaign as a string and volume as a non-negative number. Return a list of dictionaries containing campaign and total_volume, ordered by descending total volume, then ascending campaign name for ties.

Constraints

0 <= transactions.length <= 1000
Each transaction contains a non-empty string campaign
Each volume is a non-negative integer or floating-point number
Return at most three campaigns
Campaign names are compared lexicographically when totals tie

Function Signature

def top_campaigns(transactions):

Your question is Top Campaigns by Donor Volume. 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

Write a function that takes an array of donor transactions and groups them by campaign, returning the top three campaigns by total volume on Givzey.

Constraints

0 <= transactions.length <= 1000
Each transaction contains a non-empty string campaign
Each volume is a non-negative integer or floating-point number
Return at most three campaigns
Campaign names are compared lexicographically when totals tie

Function Signature

def top_campaigns(transactions):

Your question is Top Campaigns by Donor Volume. 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.