QRT OA 面试真题解析：Weather Station 分页接口过滤与排序

Use the HTTP GET method to retrieve information from a database of weather records. Query https://jsonmock.hackerrank.com/api/weather/search?name={keyword} to search all records where name contains the keyword anywhere in its string value. The query result is paginated and can be further accessed by appending &page=num where num is the page number.

The query response from the API is a JSON with the following five fields:

• page: the current page
• per_page: the maximum number of results per page
• total: the total number of records in the search result
• total_pages: the total number of pages to query to get all the results
• data: an array of JSON objects that contain weather records

The data field contains weather records with the following schema:

• name: the name of the city
• weather: temperature recorded
• status: an array of wind speed and humidity records

Filter records to include a given keyword in the name parameter. Return an array such that each element is a string of comma-separated values:

city_name, temperature, wind, humidity

For example, the JSON record is stored as:

Adelaide,15,8,61

Return the list sorted by city name.

Complete the function weatherStation(keyword).

Parameters:

• string keyword: the string to search

Returns:

• string[]: the weather data for each city

这道题考察分页 API 的遍历、字段解析和结果排序。需要用 keyword 去请求天气搜索接口，循环读取所有 page，把每条记录中的城市名、weather 温度以及 status 数组里的风速和湿度提取出来，拼成 city_name,temperature,wind,humidity 的字符串数组，最后按城市名排序返回。关键点是不要只处理第一页，要根据 total_pages 把所有分页都拉完，再用字符串解析或正则从 status 中拆出两个数字。