Take out a piece of paper. We’ll be programming on paper.
Write Java code for the following problems.
Write a public static subroutine hexValue that takes a char and returns the char’s value as an int. Use the following table:
| char | Hex Value |
|---|---|
| ‘0’ | 0 |
| ‘1’ | 1 |
| ‘2’ | 2 |
| ‘3’ | 3 |
| ‘4’ | 4 |
| ‘5’ | 5 |
| ‘6’ | 6 |
| ‘7’ | 7 |
| ‘8’ | 8 |
| ‘9’ | 9 |
| ‘A’ | 10 |
| ‘B’ | 11 |
| ‘C’ | 12 |
| ‘D’ | 13 |
| ‘E’ | 14 |
| ‘F’ | 15 |
Write a public static subroutine getHexValue that takes a String and calculates the Hexidecimal value fo the string. Use the hexValue subroutine.
Big Hint
int value = 0;
for (int i = 0; i < str.length(); i++) {
value = value * 16 + hexValue( str.charAt(i) );
}