What does this print for n=4?
<code>void p(int n) { if (n == 0) return; p(n - 1); System.out.print(n); } </code></pre>
- A
4321
- Bcheck_circle
1234
- C
4
- D
0
Explanation
Recurse first (depths to base), then print on the way back up: 1, 2, 3, 4.
Recursion
AP Computer Science A· difficulty 4/5
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