Code RoomOrders placed in one month
MediumPrep Room Coding #5042

Orders placed in one month

CodingAlgorithms & data structuresMid–Senior~10 min

Given `orders` with columns `order_id`, `customer`, `amount`, `status` and `placed`, where `placed` is an ISO date string, return the orders placed in the given year and month. Return `order_id` and `placed`, sorted by `order_id` ascending.

Implement
orders_in_month(orders: dataframe, year: int, month: int) → dataframe
Examples
in[{"__df__":[{"amount":120.5,"placed":"2024-01-05","status":"paid","customer":"ada","order_id":1},{"amount":80,"placed":"2024-01-07","status":"refunded","customer":"bo","order_id":2},{"amount":45.25,"placed":"2024-02-11","status":"paid","customer":"ada","order_id":3},{"amount":200,"placed":"2024-02-14","status":"paid","customer":"cy","order_id":4},{"amount":15.75,"placed":"2024-03-02","status":"pending","customer":"bo","order_id":5},{"amount":60,"placed":"2024-03-19","status":"paid","customer":"ada","order_id":6}]},2024,2]out[{"placed":"2024-02-11","order_id":3},{"placed":"2024-02-14","order_id":4}]
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 10 min
InputExpectedGot
[{"__df__":[{"amount":120.5,"placed":"2024-01-05","status":"paid","customer":"ada","order_id":1},{"amount":80,"placed":"2024-01-07","status":"refunded","customer":"bo","order_id":2},{"amount":45.25,"placed":"2024-02-11","status":"paid","customer":"ada","order_id":3},{"amount":200,"placed":"2024-02-14","status":"paid","customer":"cy","order_id":4},{"amount":15.75,"placed":"2024-03-02","status":"pending","customer":"bo","order_id":5},{"amount":60,"placed":"2024-03-19","status":"paid","customer":"ada","order_id":6}]},2024,2][{"placed":"2024-02-11","order_id":3},{"placed":"2024-02-14","order_id":4}]not run yetsample