Spy numbers in Java are a fascinating mathematical concept that finds application in programming. These numbers possess unique properties that make them valuable in various computational tasks. To understand them better, let’s break down the characteristics and applications of spy numbers.

Characteristics of Spy Numbers

Spy numbers exhibit the following characteristics:

1. Sum of Digits

A spy number’s most distinct feature is that the sum of its digits is equal to the product of its digits. For instance, the number 112 is a spy number because 1 + 1 + 2 = 4, and 1 * 1 * 2 = 2. The sum and product match!

2. Digit Arrangement

Spy numbers can have repeating or non-repeating digits. For example, 112 and 123 are both spy numbers, showcasing the versatility of this concept.

3. Inclusivity

Spy numbers include single-digit numbers like 1 and 2, as well as larger ones like 112 and 123.