how to modify this program to get asending order integers?

[yuvraj kotegar]

  
 
class Arrange {
 
 
public static void main(String args[]) {
 
for(int i=0; i<args.length; i++) {
   
           System.out.println(args[i]);
        }
System.out.println("Am outside the block");
}
}

i want to enter integer command line arguments and get it arranged in ascending order

[ September 24, 2008: Message edited by: Bear Bibeault ]

[Henry Wong]

Well, what have you tried so far? And what problems are you currently running into?

Henry

[yuvraj kotegar]

i only now know is that i enter command line arguments which are integers and program is printing in the same order. what i want is to print in ascending order.

so how to modify this??

[yuvraj kotegar]

since we are taking the values from command line we cant use collection classes i guess??

[Henry Wong]

Originally posted by yuvraj kotegar:
i only now know is that i enter command line arguments which are integers and program is printing in the same order. what i want is to print in ascending order.

so how to modify this??

JavaRanch is a learning site. It is against policy to do someone's homework. We can give you hints when you run into issues, but you must start it, and you must actually do most of the work.

So, what have you attempted so far? And if you have not, where would be the best place to start? Meaning what codes do you think you would need?

Henry

[Henry Wong]

Originally posted by yuvraj kotegar:
since we are taking the values from command line we cant use collection classes i guess??

Why not? How would you convert an array of strings into a collection of strings (or integers)?

Henry

[yuvraj kotegar]

int a=Integer.parseInt();

i know it. but how do you put a array of integers in it??

[Henry Wong]

Originally posted by yuvraj kotegar:
int a=Integer.parseInt();

i know it. but how do you put a array of integers in it??

In an int? Well, obviously you can't... But how do you declare an array of ints?

Henry

[yuvraj kotegar]

int a[]

probably like this??

but how do i give the size here?? i mean i dont know how many values i am entering in command line!!

[Rob Spoor]

Sure you do. Just look at args.

[Henry Wong]

but how do i give the size here?? i mean i dont know how many values i am entering in command line!!

You do know that you are asking the next questions already. You can actually ask yourself the question and figure it out -- or you can wait for me to parrot you...


Anyway... how do you figure out how many parameters are entered in the command line?

Henry

[yuvraj kotegar]

args.length

is it??

[yuvraj kotegar]

  
 
import java.util.*;
class Arrange {
 
 
   public static void main(String args[]) {
 
      int arr[]=new int[args.length];
      for(int i=0;i<args.length;i++) {
         arr=Integer.parseInt(args[i]);
         System.out.println(arr);
      }
      Arrays.sort(arr);
      for(int i=0; i<args.length; i++) {
         System.out.println(arr[i]);
      }
   }
}

this is the modified logic

[edit]Correct indentation. CR[/edit]
[ September 25, 2008: Message edited by: Campbell Ritchie ]

[Henry Wong]

this is the modified logic

Well, did it compile? And if it did, did it work?

Henry

[yuvraj kotegar]

no am getting a error with this line

arr=Integer.parseInt(args[i]);


what to do??

am not getting idea

[Campbell Ritchie]

You have called your array "arr" and you are trying to put an int into the array; you really ought to be putting the int into a particular member of that array.

And please indent code inside the code tags (better to use ctrl-c ctrl-v) because it makes it easier to read; I shall edit your last post so you can see the difference.

[yuvraj kotegar]

how to send the input command line parmaters into the Array.sort() method.

[Rob Spoor]

Well your code is already quite good, if you fix two lines:

arr=Integer.parseInt(args[i]);
System.out.println(arr);

You want to set and read only one specific element of the array, not the entire array. You've already shown you know how to read an array element, setting it is not that different.

[yuvraj kotegar]

 
 
arr[i]=Integer.parseInt(args[i]);
System.out.println(arr[i]);
 

it's working fine now. i have fixed it. Thanks people

[Campbell Ritchie]

Well done, and you're welcome