In Java how do you convert a decimal number to base 36?

Question

If I have a decimal number, how do I convert it to base 36 in Java?

Answer 1

If you dont want to use Integer.toString(Num , base) , for instance, in my case which I needed a 64 bit long variable, you can use the following code: Using Lists in JAVA facilitates this conversion

long toBeConverted=10000; // example, Initialized by 10000
List charArray = new ArrayList();
List charArrayFinal = new ArrayList();
int length=10; //Length of the output string
long base = 36;

            while(toBeConverted!=0)
            {
                long rem = toBeConverted%base;
                long quotient = toBeConverted/base;
                if(rem<10)
                    rem+=48;
                else
                    rem+=55;
                charArray.add((char)rem);
                toBeConverted=quotient;
            }
            // make the array in the reverse order
            for(int i=length-1;i>=0;--i){
                if(i>=charArray.size()){
                    charArrayFinal.add((char) 48); // sends 0 to fix the length of the output List
                } else {
                    charArrayFinal.add(charArray.get(i));
                }

            }

Example:

(278197)₃₆=5YNP