Integer how many digits

The hotspot VM could optimise this graph otherwise, resulting in wrong benchmarks, because it is returning the same precomputed thing every time.

Note that Math. Add a comment. Santosh Santosh 1, 12 12 silver badges 21 21 bronze badges. Why floor? I believe is not necessary, could you please explain it? Can't leave a comment yet, so I'll post as a separate answer. Community Bot 1 1 1 silver badge. Dirk Dirk The Math. Casting to int will round it down anyway. DmitryK Dirk: Note that Math. Another string approach. Short and sweet - for any integer n.

ThisClark ThisClark Only works for positive integer n and zero. Can it be? Can I try? DmitryK DmitryK 5, 1 1 gold badge 19 19 silver badges 32 32 bronze badges. How about plain old Mathematics? Divide by 10 until you reach 0. Sinista Sinista 1 1 gold badge 6 6 silver badges 12 12 bronze badges. Have you tested it? You know that, even tough it makes sense for a human viewpoint, it doesn't really work the same with the machine's "way-of-thinking", right?

The principle looks correct to me. What "shocking" result are you referring to? Let's just say that computers They don't like dividing.

And in cases where large "queues" of large numbers need to be processed, and each digit in each processed number will require a division Things "start getting really slow really fast" If you catch my meaning TheLima what are you talking about? For an int, this loop executes a maximum of 11 times. Do you have some evidence for your assertions? EJP From a hardware viewpoint, division is an iterative process.

The fastest division algorithm I know of is radix4, which generates 4 bits per iteration; so a 32 bit divide needs 8 iterations at least. Multiplications, for example, can be done in parallel, and also be broken down into simpler multiplications; either down to bit level requiring only 5 operations , or with partial break down plus a look-up table at the end Classic size VS speed trade-off.

That's kinda hard to read. But damn is it portable! Curious, I tried to benchmark it Test; import static org. Jean Jean Just for the fun of it, what's the difference across a distribution of values of number, from say 0 to a trillion? Teepeemm 3, 5 5 gold badges 30 30 silver badges 51 51 bronze badges. Calculate the Sum of Natural Numbers.

Find Factorial of a Number. Generate Multiplication Table. Display Fibonacci Series. Related Topics Java while and do Java continue Statement. Java Program to Count Number of Digits in an Integer In this program, you'll learn to count the number of digits using a while loop and for loop in Java.

Share on:. Did you find this article helpful? Sorry about that. Representations of numbers have digits, and the representation of the number zero in arabic numberals is the character 0, which is a single digit. With this logic, one could say that the number "11" has 3 digits , 8 digits , so on and so forth. Show 2 more comments. Active Oldest Votes. Steven Stadnicki Steven Stadnicki Which doesn't explain why I went into polynomials, but Isn't that basically what they did in the Indiana Pi Bill?

I recognize that there may be practical applications for this, but answering "negative infinity" when asked how many digits 0 has doesn't really make sense. Definitions of this sort are as you say made to "ensure continuity". Either way there is no contradiction. Show 3 more comments. OP's question provides almost no information about what they really want to know, or why. But Jonny's objection in the comments on the question itself are even better, in that even this is a priori ambiguous: most, e.

Add a comment. Community Bot 1. It doesn't really make sense to classify it as "base 1". XXIII is 23 as base 2, because it uses 2 symbols? ZoneId to java. TimeZone how to change fragment on button click navigation drawer how to call a void method with parameters in java java get creation date of file convert object array to int array java gravity in java select max value from list java addOnTabSelectedListener java android multiple variables in for loop java como programar el algoritmo de strassen en java load file as string java Java while loop example ferrari class in java Linked List implementation how to create a variable java linux command to see all the java version installed java linked list swap elements how to make a string java resurce leak java how to check when edittext clicked android bipredicate in java set value in a position android arraylist connect 2 package in android threads java java completablefuture chain 2 operations scrollbar in textarea java batch file to switch between java version JDK 8.

Social Twitter Facebook. Legal Privacy Policy Terms. Register to vote on and add code examples.