Write it, run it, read the output

Reading · 8 minQuiz · 5 questions2 code drills · run only

This is a scratch drill — your code runs, nothing is graded or recorded. No test cases, no expected output, no verdict.

TASK

Repair the recursive call so trace(3) reaches the base case at 0 and prints the "up n" lines as the paused calls resume. The output must contain the exact seven-line trace.

Java

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OUTPUT

Sample

down 3
down 2
down 1
stop
up 1
up 2
up 3

What a finished answer prints, from the lesson. Nothing has run yet — press Run and this is replaced by your program’s own output.

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