MediumPro challengePythonJavaScriptTypeScript
Stream Buffer Concatenation
BackendStreamsBuffers
Simulate consuming a readable stream that emits chunks (string arrays).
Return one concatenated string.
solve(['Hello, ', 'World', '!']) → 'Hello, World!'.
Sample tests
Test #1Three chunks
Input: [["Hello, ","World","!"]]
Output: "Hello, World!"
Test #2Empty stream
Input: [[]]
Output: ""
Test #3Single chunk
Input: [["single"]]
Output: "single"
Test #4Empty chunk in middle
Input: [["a","","b"]]
Output: "ab"
Test #5Three single chars
Input: [["x","y","z"]]
Output: "xyz"