Classics 4361 Lecture 15: Lecture 15

31. What is printed by the following code in base 2? int sum = 0; for (int x = 0; x< 5; x++) sum+=x; System.out.println(sum); 21 x 21 + 0 x 23+1 22 +1 x 21 +1 x 20

3. What will print in the following code snippet? int i = 1; int j = 2; i = j; j = i; System.out.println(i + " " + 1); (A) 22 (B) 21 (C) 11 (D) 3 (E) 12

21. What prints in the following question. int[] [] x = { { 1, 2, 3} , {4, 5}, {6, 7}}; x[0] = new int [4]; System.out.println(x.length); (A) 3 (B) 8 (C) 7 (D) There is a compiler error. (E) 2