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For example, sumDigits(234) returns 9 (= 2 + 3 + 4). (Hint: Use the % operator to extract digits and the / operator to remove the extracted digit. For instance, to extract 4 from 234, use 234 % 10 (= ...
In this lab, you will develop a Java method named sumOfDigits. This method takes an integer as input and returns a single-digit integer by summing the digits repeatedly until only a single digit ...