Discussion
Which line rests on a mistaken assumption?
public class Sample85
{
public static void main(String[] args)
{
assert -7 % 3 == 2 : -7 % 3;
System.out.println(-7 % 3);
}
}
Answer: A
In Java the remainder takes the sign of the dividend, so -7 % 3 is -1, not 2. The assertion assumes the mathematical modulus, which is always non-negative. Getting a non-negative result requires adding the divisor back: ((-7 % 3) + 3) % 3.
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