Solution to Program 1

/**

*

* Name(s):

* ID(s):

* Sections(s):

*

* CS100J: Program 1

* Fall 2000

*

* Input any integer and repeatedly divide it by 2 if even and multiply itby

* 3 and add 1 if odd. Stop on reaching 1 or less.

*

*/

import java.io.*;

public class CUCSApplication

{

public static void main ( String[] args )

{

int k;

// Initialize TokenReader object to read from standard input.

TokenReader in = new TokenReader( System.in );

// Read and write some numbers and strings

System.out.println( "Please enter an integer: " );

// Read integer

k = in.readInt();

// Perform algorithm

while ( k > 1 )

if ( k % 2 == 0 ) { // test if k is even

k = k/2;

System.out.println( k + " after dividing by 2" );

}

else { // if k is odd

k = 3*k + 1;

System.out.println( k + " after multiplying by 3 and adding 1" );

}

System.out.println( "Done!" );

}

}