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ASU CSE 110 FINAL JAVA 2023 FINAL
PAPER 2026 COMPLETE SOLUTIONS AND
CORRECT ANSWERS GRADED A+
⩥ 44) Which of the following is considered a loop with a bound that could be problematic? a) for (i = 1; i != n; i++) b) for (years = n; years < 0; years--) c) for (i = 1; i <= n; i++) d) for (int i = 1; i <= 10; i++). Answer: Answer: a) for (i = 1; i != n; i++) ⩥ 45) In the __________ loop header, you can include multiple update expressions, separated by commas, but it is not recommended. a) do b) while c) for d) do. Answer: Answer: b) while ⩥ 46) What values does counter variable i assume when this loop executes?
for (int i = 20; i >= 2; i = i - 6) { System.out.print(i + ","); } a) 20, 14, 8, 2 b) 20, 14, 8, 2, - 4 c) 20, 14, 8 d) 14, 8, 2. Answer: Answer: b) 20, 14, 8, 2, - 4 ⩥ 47) Insert a statement that will correctly terminate this loop when the end of input is reached. boolean done = false; while (!done) { String input = in.next(); if (input.equalsIgnoreCase("Q")) {
}
i++; } while (i < 5); a) abcd b) bcde c) bcbcd d) cdef. Answer: Answer: c) bcbcd ⩥ 49) What is the output of this code snippet if the user enters the numbers 1 2 3 4 - 1 5? double total = 0; boolean hasValidNumber = true; Scanner in = new Scanner(System.in); while (in.hasNextDouble() && hasValidNumber) { double input = in.nextDouble(); if (input < 0) { hasValidNumber = false; }
else { total = total + input; } } System.out.println(total); a) 15. b) 14. c) 12. d) 10.0. Answer: Answer: d) 10. ⩥ 50) What does the following code do? int sum = 0; final int count = 1000; for (int i = 1; i <= count; i++) { sum = sum + (int) (Math.random() * 101); } System.out.println(sum / count); a) It simulates the outcome of throwing a coin.
i--; } } System.out.println("r = " + r); a) 16. b) 128. c) 4096. d) 65536.0. Answer: Answer: d) 65536. ⩥ 52) Choose the loop that is equivalent to this loop. int n = 1; double x = 0; double s; do { s = 1.0 / (n * n); x = x + s; n++; } while (s > 0.01);
a) double x = 0; double s = 1; for (int k = 1; s > 0.01; k++) { s = 1.0 / (k * k); x = x + s; } b) double x = 0; double s = 1; for (int k = 1; k < 100; k++) { s = 1.0 / (k * k); x = x + s; } c) double x = 0; double s = 1; int k = 10; while (s > 0.01) {
int f1 = 0; int f2 = 1; int fRes; System.out.print(f1 + " "); System.out.print(f2 + " "); for (int i = 1; i < 10; i++) { fRes = f1 + f2; System.out.print(fRes + " "); f1 = f2; f2 = fRes; } System.out.println(); a) 0 1 5 7 9 11 13 15 17 19 b) 0 1 1 2 3 5 8 13 21 34 c) 0 1 4 6 8 10 12 14 16 18 d) 0 1 6 7 9 12 14 17 19 21. Answer: Answer: b) 0 1 1 2 3 5 8 13 21 34 ⩥ 54) How many times does the following loop execute?
double d; double x = Math.random() * 100; do { d = Math.sqrt(x) * Math.sqrt(x) - x; System.out.println(d); x = Math.random() * 10001; } while (d != 0); a) Exactly once b) Exactly twice c) Can't be determined d) Always infinite loop. Answer: Answer: c) Can't be determined ⩥ 55) What is the output of this loop? int i = 0; boolean found; while (i < 20 && !found) { int sum = i * 2 + i * 3;
a) 100 b) 49. c) 60. d) 10. Answer: Answer: a) 100 ⩥ 57) What does the following code snippet print? int a = 120; int b = 90; int n1 = Math.abs(a); int n2 = Math.abs(b); int result = 1; for (int k = 1; k <= n1 && k <= n2; k++) { if (n1 % k == 0 && n2 % k == 0) { result = k; } } System.out.println(result);
a) 10 b) 20 c) 30 d) 40. Answer: Answer: c) 30 ⩥ 58) What does the following code snippet display? char ch1 = '\ u0000'; char ch2 = '\ uffff'; for (int i = 0; i < 1000; i++) { if (i % 50 == 0) { System.out.println(); } System.out.print((char)(ch1 + Math.random() * (ch2 - ch1 + 1))); } a) It displays random Unicode characters. b) It displays random ASCII characters. c) Nothing because it has compilation error.
while (i < 10 && !found); c) int i = 0; while (i <= 10) { i++; } d) for (int i = 1; i <= 10; i++). Answer: Answer: d) for (int i = 1; i <= 10; i++) ⩥ 61) How many times does the following loop execute? for (double d = 1; d != 10; d++) { d = d / 3; System.out.print(d + " "); } a) 10 b) 9 c) 8
d) An infinite number of times. Answer: Answer: d) An infinite number of times ⩥ 62) How many times does the following loop execute? int i = 0; boolean found = false; while (i < 100 && !found) { i++; System.out.print(i + " "); int j = i * i; if ((i * i * i) % j == j) { found = true; } } a) 10 times b) 20 times c) 100 times d) An infinite number of times. Answer: Answer: c) 100 times
if (i % 2 == 0) { sum = sum + i; } } d) int sum; for (int i = 1; i <= n; i++) { sum = sum + i * 2;. Answer: Answer: b) int sum = 0; for (int i = 1; i <= n; i++) { sum = sum + i * 2; } ⩥ 64) Suppose that a program asks a user to enter multiple integers, either positive or negative, to do some calculation. The data entry will stop when the user enters a certain value to indicate the end of the data. What value should the code use as the sentinel? a) 0
b) - 1 c) 999 d) An alphabetic character. Answer: Answer: d) An alphabetic character ⩥ 65) Which of the following statements expresses why the following code is considered bad form? for (rate = 5; years-- > 0; System.out.println(balance))
... I. Unrelated expressions in loop header II. Doesn't match expected for loop idiom III. Loop iteration is not clear a) II and III only b) I and II only c) I and III only d) I, II, and III. Answer: Answer: d) I, II, and III ⩥ 66) Which of the following is considered a loop with a problematic condition? a) for(i = 1; i != n; i++)
