Exam 6: Loops

Is the code snippet written below legal? String s = "1234"; For (int i = 0; i <= 5; i++) { System.out.print); }

Assume the following variable has been declared and given a value as shown: Random rand = new Random(); Which of the following will generate a random integer in the range - 20 to 20, inclusive, where each value has an equal chance of being generated?

How many times is the text "Let's have fun with Java." printed when this code snippet is run? Int i = 0; Do { System.out.println("Let's have fun with Java."); I++; If (i % 2 == 0) { I = 10; } } While (i <= 10);

What is the output of the code snippet given below? Int i; Int j = 0; For (i = 0; i < 5; i++) { If (i % 2 == 0) { I = i + 2; J++; } Else { I++; J = j + 2; } J++; } System.out.println("i=" + i + ", j=" + j);

What is the output of the code snippet given below? Int i = 0; While (i != 11) { System.out.print(i + " "); I = i + 3; }

How many times does the following loop execute? double d; Random generator = new Random(); Double x = generator.nextDouble() * 100; Do { D = Math.sqrt(x) * Math.sqrt(x) - x; System.out.println(d); X = generator.nextDouble() * 10001; } While (d != 0);

Suppose that the chance to hit the jackpot in a lottery is one in one million. Which of the expressions simulates that random number? (Assume Random generator = new Random();)

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);

What will be printed by the statements below? for (int ctr = 0; ctr < 10; ctr++) { System.out.print (ctr + " "); }

What is the last output line of the code snippet given below? Int i = 5; While (i >= 1) { Int num = 1; For (int j = 1; j <= i; j++) { System.out.print(num + "**"); Num = num * 2; } System.out.println(); I = i - 1; }

Which of the following loop(s) could possibly not enter the loop body at all? I. for loop II. while loop III. do loop

What is the output of the following code snippet? Int counter = 1; For (double i = 0.01; i <= 1.0; i = i + 0.01) { Counter++; } System.out.println(counter);

What is the output of this code snippet? String str = "ABCabc"; Char ch; Int i = 0; While (i < str.length()) { Ch = str.charAt(i); If (Character.isLowerCase(ch)) { System.out.print(i + " "); } Else { I++; } }

What will be the output of the following code snippet? boolean token = false; Do { System.out.println("Hello"); } While (token);

How many times will the following loop run? Int i = 0; While (i < 10) { System.out.println(i); I++; }

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

How many times does the following loop execute? Int upperCaseLetters = 0; String str = "abcdEfghI"; Boolean found = false; For (int i = 0; i < str.length() && !found; i++) { Char ch = str.charAt(i); If (Character.isUpperCase(ch)) { Found = true; } }

In the __________ loop header, you can include multiple update expressions, separated by commas, but it is not recommended.

Storyboards are a helpful part of the design process because the storyboard develops

How many times does the code snippet below display "Hello"? Int i = 0; While (i != 15) { System.out.println("Hello"); I++; }