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alpesh

Fri Nov 20, 2009 10:44 pm


My Programs

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/*
Example :

           Input - 153

           Output - 1^3 + 5^3 + 3^3 = 153, so it is Armstrong no. 
           Armstrong.java
*/

class Armstrong{

      public static void main(String args[]){

      int num = Integer.parseInt(args[0]);

      int n = num; //use to check at last time

      int check=0,remainder;

      while(num > 0){

           remainder = num % 10;

           check = check + (int)Math.pow(remainder,3);

           num = num / 10;

      }

      if(check == n)

            System.out.println(n+" is an Armstrong Number");

      else

            System.out.println(n+" is not a Armstrong Number");

   }

}


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alpesh

Fri Nov 20, 2009 10:46 pm


Re: My Programs

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// The program takes two integer arguments from the command line x and y 
// and returns the gcd(x,y)

class GCDtest 
{ 
private final static String USAGE = "Usage: java GCDtest x y"; 
public static void main(String[] args) 
{ 
// test number of input arguments 
if (args.length != 2) 
{ 
System.out.println(USAGE); 
System.exit(-1); 
} 
try 
{ 
// read in command line input 
int x = java.lang.Integer.parseInt(args[0]); 
int y = java.lang.Integer.parseInt(args[1]); 
// calculate and print gcd recusively 
System.out.println(gcd(x,y)); 
} 
catch (NumberFormatException ex) 
{ 
System.out.println(USAGE); 
System.exit(-1); 
} 
} 
// recursive algorithm to calculate the greatest common divisor of two integers

private static int gcd(int x, int y) 
{ 
if (y != 0) 
return gcd (y, x % y); 
else 
return java.lang.Math.abs(x); 
} 
}


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alpesh

Fri Nov 20, 2009 10:47 pm


Re: My Programs

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/* The program will give the output of Largest of 4 numbers.*/

class Largest4
{
  public static void main (String args[])
  {
    int a=50,b=3,c=100,d=150;
    int max;
    max=(a>b)?(a>c?(a>d?a:d):(c>d?c:d)):(b>c?(b>d?b:d):(c>d?c:d)); 
    System.out.println("\n Largest=" +max );
  }
}


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wtd

Sat Nov 21, 2009 1:51 am


Re: My Programs

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/* The program will give the output of Largest of 4 numbers.*/

I challenge you to make this work with any number of integers in an array.

class Largest {
    public static void main(String