FlipComp

A Silly Cryptographic Encoding Algorithm

Concepts Involved

• String Reversal

• 2's Complement

  privatechar[] flipComp(Stringst) {
  char[] src = st.toCharArray();
  intl = st.length(), n = l / 2, x = l - 1;
  intb = 0x80;
  for (inti = 0; i < n; i++) {
  charc = (char) flipNibble((~src[i] + 1) ^ b);
  src[i] = (char) flipNibble((~src[x] + 1) ^ b);
  src[x] = c;
  x--;
  }
  returnsrc;
  }

• Flip Nibble (4-bits)

  privateintflipNibble(intn) {
  return (((n & 15) << 4) | ((n >> 4) & 15));
  }