?
Solved

Problems with using pow

Posted on 2006-11-10
4
Medium Priority
?
347 Views
Last Modified: 2006-11-18
I have a small problem with using pow.

public class Main {
   
    static public int bin2int(int[] array) {
        int value=0;        
        System.out.println("al: "+array.length);
        for(int i = 0, i2 = array.length-1; i < array.length; i++, --i2) {
            value += Math.pow(array[i]*2,i2); ///////////// here the problem is
            System.out.println(array[i]+"*2^"+i2+"="+value);
        }
        System.out.println("dec val: "+value);
        return value;
    }
   
    public static void main(String[] args) {
        // TODO code application logic here
        int buffer[] = {0,0,0};
        bin2int(buffer);
    }
}

gives me:

al: 3
0*2^2=0
0*2^1=0
0*2^0=1
dec val: 1

It should not give me 1 when using pow(0*2,0). How to deal with this?
0
Comment
Question by:m-jansen
  • 2
  • 2
4 Comments
 
LVL 86

Accepted Solution

by:
CEHJ earned 250 total points
ID: 17914109
>>It should not give me 1 when using pow(0*2,0). How to deal with this?

Yes, x^0=1
0
 

Author Comment

by:m-jansen
ID: 17914140
sorry I got the solution... now
value += array[i]*Math.pow(2,i2);
0
 

Author Comment

by:m-jansen
ID: 17914148
I'll accept your answer anyway
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17914197
:-)
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.
Suggested Courses
Course of the Month17 days, 7 hours left to enroll

864 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question