3. Write segments of code for the following. a. Write an if statement to determine whether an integer j is even or odd. (2 marks) b. Use a switch statement to rewrite the following if statement: (4 marks) if (a == 1) x += 5; else if (a == 2) x += 10; else if (a == 3) x += 16; if (a == 4) x += 34; c. Convert the following for loop statement to (i) while loop and (ii) do-while loop. (4 marks) long sum = 0; for (int i = 0; i