Java Ice Breakers

How to find length of integer value using core logic

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by

anagendrakumar2020
in , ,

Look at the first solution to find the length of a given integer which is a primitive datatype. This approach is based on the core logic without using any built-in methods.

 import java.util.Scanner;
  
 public class LengthOfPrimitiveIntValue {
  
        public static void main(String[] args) {
              // TODO Auto-generated method stub
  
              @SuppressWarnings("resource")
              Scanner inpInt= new Scanner(System.in);
              
              //Input an Integer
              System.out.println("Enter an Integer=");
              int numValue=inpInt.nextInt();
              System.out.println("The integer is="+numValue);
              
              //Find out the Length
              int lenOfInt=0, numBackUp= numValue;
              while (numValue!=0) {
                     lenOfInt=lenOfInt+1;
                     numValue=numValue/10;
              }
              System.out.println("The Length of an Integer "+numBackUp+" is="+lenOfInt);     
        }
 }
Try it >>
Output: 
 Enter an Integer=
 324
 The integer is=324
 The Length of an Integer 324 is=3

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