HiTech Quiz 6

What is the output of this program?

• 0

• 1

• 120

• None of the above

Why would you use a base case?

• So that the code loops forever

• So that the code does not loop forever

• Because coding

What is the output of this program?

• 2

• 3

• 4

• ArrayIndexOutOfBoundsException

static void print(int x){

if(x==0) {

return;

}

System.out.print(x%2);

print(x/2);

}

What will be the output of the above code segment if the print() method is called with the parameter 9?

• 001

• 100

• 1001

• 101

• 1110

Consider the following code segment.

String one = "ABC123";

String two = "C";

String three = "3";

System.out.println(one.indexOf(two));

System.out.println(one.indexOf(three));

System.out.println(two.indexOf(one));

What is printed when the code segment is executed?

• 2

  5

  -1

• 2

  5

  2

• 2

  6

  -1

• 3

  6

  -1

• -1

  -1

  2

Name the condition at which the recursive method will stop calling itself.

• Base case

• Worst Case

• Best Case

• None of the above

Which of the following condition is true?

• Recursion is always better than iteration.

• Recursion uses more memory as compared to iteration.

• Recursion uses less memory as compared to iteration.

• Iteration is always better and simpler than recursion.

Which of the following problems can be solved using recursion?

• finding Nth number of the Fibonacci sequence

• finding the factorial of a number

• finding the length of a string

• all of the above

what will multiplyEvens(3) return?

• 4

• 2

• 48

• 8

What is the difference between length and length() when working with arrays in Java?

• 'length' and 'length()' are interchangeable in Java

• In Java, 'length' is a property used to get the size of an array, while 'length()' is a method used to get the length of a string.

• 'length' is used to get the size of a string, while 'length()' is used for arrays

• 'length' is a method for arrays, and 'length()' is a property for strings