public static int isOdd(int x). This function returns 1 if the number is odd, and 0 if it is even. It returns 0 on 6, and 1 on 5. public static int DivBy4(int x). This functions performs integer division by 4. It returns 1 on 6, 3 on 13, 0 on 3, and -4 on -16. public static int nearestOdd(int x). This function rounds up the number to the nearest odd number. It returns 7 on 6, 5 on 5, and -3 on -4. public static int flipParity(int x). This function adds 1 to even numbers, and subtracts one from odd numbers. It returns 7 on 6, 4 on 5, and -4 on -3. public static int isNegative(int x). This function returns 0 if x is positive, and 1 if x is negative. It returns 0 on 4, and 1 on -3.