Optimizing converting int to base36

Question

I currently do a lot of conversions from int into a base36 string (70%~ of programs time). Are there any obvious optimisations to this code? ``` public static final String alphabet = "0123456789abcdefghijklmnopqrstuvwxyz"; public static StringBuilder b = new StringBuilder(); public static String sign = ""; public static String convertToBase36(int number) { if (number == 0) { return "0"; } b.delete(0, b.length()); sign = ""; if (number < 0) { sign = "-"; number = -number; } int i = 0; int counter = 10; while (number != 0 && counter > 0) { counter--; i = number % 36; number = (number - i)/36; b.append(alphabet.charAt(i)); } return sign + b.reverse().toString(); } ```

Accepted Answer

You can use:

```
String s = Integer.toString(100, 36);
int i = Integer.parseInt("2s", 36);
```

Easier to maintain, and probably well optimized.

Optimizing converting int to base36

Solution

Problem