Doubling each element of m:
- A
Cannot modify
- Bcheck_circle
Use indexed loops: for(i...) for(j...) m[i][j] *= 2;
- C
Use stream()
- D
Use enhanced-for (modifies)
Explanation
Enhanced-for gives copies (for primitives); use indexed loops for modification.
Traversing 2D Arrays
AP Computer Science A· difficulty 4/5
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