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BasicJavaScript~8 min

Group API responses by status code

Realistic data-handling task in API automation interviews

Points available

100/100

Your mission

  1. Read
  2. 2Run
  3. 3Submit
  4. 4Solve

You get an array of API responses like { url, status }.

Write countByStatus(responses) returning an object of status code → count.

Examples

countByStatus([{url:"/a",status:200},{url:"/b",status:404},{url:"/c",status:200}]) → { "200": 2, "404": 1 }

Hints

Each hint costs 10 points on a full solve.

Interviewer follow-ups

  • How would you list the URLs that failed (status >= 400)?

Ctrl+Enter to run · add Shift to submit

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Tab inserts two spaces. Press Escape, then Tab, to leave the editor.
Terminal

$ node solution.js

Run executes the open file. Submit scores solution.js against hidden tests.

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