Computer Science Canada

My Programs
Author:  alpesh [ Fri Nov 20, 2009 10:44 pm ]
Post subject:  My Programs
/*
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");

}

}
Author:  alpesh [ Fri Nov 20, 2009 10:46 pm ]
Post subject:  Re: My Programs
// 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);
}
}
Author:  alpesh [ Fri Nov 20, 2009 10:47 pm ]
Post subject:  Re: My Programs
/* 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)Sadc>d?c:d))Sadb>c?(b>d?b:d)Sadc>d?c:d));
System.out.println("\n Largest=" +max );
}
}
Author:  wtd [ Sat Nov 21, 2009 1:51 am ]
Post subject:  Re: My Programs
alpesh @ Sat Nov 21, 2009 11:47 am wrote:
Java:
/* The program will give the output of Largest of 4 numbers.*/[/color]

class Largest4 {
  public static void main(String args[]) {
    int a = 50, b = 3, c = 100, d = 150;
    int 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 );
  }
}


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

Java:
class Largest {
    public static void main(String[] args) {
        int[] numbers = {5, 7, 2, 34, 1, 98, 0, 4};

        // ...

        System.out.println("\n Largest = " + max);
    }
}

:


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