In my very last method ( int BTD) I am trying to read a string input form right to left when the input for the integer starts with one ( in this case a negative number , since I am testing for binary ) . Basically I am doing the � Two�s Complement� method on the negative number turn it into a positive binary number and just add the �-� negative sign in front of it , something like ( result = �-� + result ) . So I have no problem taking the positive binary number and converting to decimal , but can not figure out the correct way to code the negative number block of code ? Please any suggestions would be of great help !! listed below is my code , it attaches to a user class that gets the I/O but my professor did not give us access to that code . Thank you everyone for the insight !
Joined: Oct 13, 2005
To reverse a String: easy.
Use its toCharArray() method to get it into an array.
Write a [public static void] swapPair(char arr, int i, int j) method.
Write a [public static void] reverseArray(char arr) method which iterates along � the array and repeatedly swaps pairs ef elements. Be careful about the numbering of the elements. to avoid ArrayIndexOutOfBoundsExceptions.
Pass the resulting char array to the constructor of the String class.
I am sure there are other ways to do it.
It would have been a lot easier if you had been told to use 32-character Strings, since int numbers use 32 bits.
I hope that has given you something to get on with. Good luck with the exercise.