Question

/* Return true if the given non-negative number is 1 or 2 less than a

* multiple of 20. So for example 38 and 39 return true, but 40 returns false.
*/
public boolean less20(int n) n % 20 == 18;

Answer 1

The question involves a Java method that checks if a non-negative integer is 1 or 2 less than a multiple of 20 by using a modulus operation.

Step-by-step explanation:

The student's question pertains to the evaluation of a conditional statement in a Java method. The purpose is to determine whether an input non-negative number is either 1 or 2 less than a multiple of 20. The provided code uses the modulus operator (%) to check the remainder when the input number is divided by 20.

If the remainder is 19 or 18, it signifies that the number is 1 or 2 less than a multiple of 20 respectively, and the method returns true. If the remainder is any other number, it means that the condition is not met and the method should return false.