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#1 Helghast ?
Reputation: 0
- Posts: 2
- Joined: 08-June 13
Posted Yesterday, 11:54 AM
I have an assignment I am a bit stuck on. The prompt is: (Find the smallest element) Write a method that finds the smallest element in an array of double values using the following header:public static double min(double[] array)
Write a test program that prompts the user to enter ten numbers, invokes this
method to return the minimum value, and displays the minimum value.
Here is what I have so far:
import java.util.Scanner; public class Exercise6_9 { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Enter 10 numbers."); double[] numbers = new double[10]; for (int i = 0; i < numbers.length; i++ ){ numbers[i] = input.nextDouble(); } } public static double min(double[] numbers){ double min = numbers[10]; for(int i=1;i<numbers.length;i++){ if(numbers[i] < min){ min = numbers[i]; System.out.println(min); } } return min; } }
I cannot figure out how to print the minimum value. I have tried countless different solutions. I am a complete noob at Java and my question is, am I at least close to the solution? and if so how do I print the minimum value? I get the error that "double[] cannot be defined in exercise 6_9."
Any help would be much appreciated.
Is This A Good Question/Topic? 0
Replies To: Find the smallest element in array
#2 sepp2k ?
Reputation: 1708
- Posts: 2,579
- Joined: 21-June 11
Re: Find the smallest element in array
Posted Yesterday, 12:09 PM
Yes, you're on the right track. The only thing that's missing is for you to call your min method from the main method and print the result.You also probably shouldn't print the current minimum every time that you pick a new minimum, but I assume that's just there for debugging purposes.
I get the error that "double[] cannot be defined in exercise 6_9."
Can you post the exact and complete error message including line numbers and whatnot? I don't get any error message when compiling and running your code.
#3 axel1994 ?
Reputation: 1
- Posts: 14
- Joined: 27-May 13
Re: Find the smallest element in array
Posted Yesterday, 12:15 PM
A couple points:try to watch for indentation.
(your main is nice and readable, but your min is too indented.)
next: try to keep your main as small as possible. Only a couple lines.
Everything else could be done in another method.
Make only your main (and some variables when necessary) static.
In order to call those non-static methods in your main you create an new object. (classname name = new classname() )
Than you can call your methods via the object name.
Nextup:
Your program is not entirely correct.
Any array-index (whether it's double, int, String, ...) always start at 0.
So item 1 is a index 0.
#4 Helghast ?
Reputation: 0
- Posts: 2
- Joined: 08-June 13
Re: Find the smallest element in array
Posted Yesterday, 12:46 PM
I got it figured out. Thank you guys so much. Sometime when joining a new forum you get yelled at and told to use Google and you do not feel welcome. I thank you for your fast reposes and your helpful answers.
#5 schutzzz ? 
Reputation: 20
- Posts: 64
- Joined: 22-April 13
Re: Find the smallest element in array
Posted Yesterday, 03:18 PM
I got it figured out. Thank you guys so much. Sometime when joining a new forum you get yelled at and told to use Google and you do not feel welcome. I thank you for your fast reposes and your helpful answers.
Ah, welcome to D.I.C! 
As Axel said, keep your main method small. You could also use a constructor when doing this, your main will only have one line, and you won't need to make your other variables or methods static except for main.
public class Name { Name() { //code you'd put in main here. } //other methods you need. don't need to make them static. public static void main(String[] arguments) { Name name = new Name(); } }
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