Web Reference: In this program, you'll learn to count the number of digits using a while loop and for loop in Java. Learn 6 easy ways to count the number of digits in an integer using Java. Includes simple code examples and clear explanations. Read now! Perhaps the easiest way of getting the number of digits in an Integer is by converting it to String, and calling the length() method. This will return the length of the Stringrepresentation of our number: However, this may be a sub-optimal approach, as this statement involves memory allocation for a String for each evaluation. The JVM must parse ou...
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