Ruby: Convert a decimal number into binary using bitwise operation

I have already showed you how to convert a decimal number into binary using Bitwise operations at my post http://icfun.blogspot.com/2009/04/algorithm-bitwise-operation-to-convert.html

Here is a small Ruby code, this will take a 32 bit positive integer number, and after applying the last posted bitwise algorithm, it will just print out the binary representation of the provided number. Here is the Ruby code using bitwise operations.

## takes a positive number less than 2^32-1
## prints it's binary format
def binary_2_decimal(int)
    
    ## constant = 10000000000000000000000000000000
    const = 0x80000000;
    output = "";
    
    i = 0;
    ## for each bit
    while( i < 32)
        
        ## if the bit is set, print 1
        if( (int & const) != 0 )
            output = output + "1";
        else
            output = output + "0";
        end
            
        ## shift the constant using right shift
        const = const >> 1;
        i = i + 1;
    end
    
    print output;
end

TO use the code

binary_2_decimal(4294967290);

The output will be
11111111111111111111111111111010

Once again, The bitwise operators those are used to implement the algorithm are Logical AND, and logical shift (right >>) operators. Hope this will help you to understand about bitwise operations too.