Boolean Logic & Conditional Statements
When removing an object from an ArrayList, what must be taken into account regarding subsequent elements?
The remaining elements must be shifted left
The size of the ArrayList remains constant
Null values must replace removed slots
Each element's hash code must be recalculated
Why are well-named methods important when writing modular code?
They allow methods to be executed without being defined in a class first.
They provide clarity about what tasks each method performs.
They ensure that method overloading is always implemented correctly.
They prevent any form of data leakage between different parts of the program.
Given a recursive method int mystery(int[] arr, int n), which correctly describes its purpose if mystery returns arr[n-1] + mystery(arr, n-1) for n > 0, and 0 for n == 0?
It reverses the order of the first n elements in the array.
It sorts the first n elements of the array in ascending order.
It finds the maximum element in the first n elements of the array.
It calculates the sum of all elements in the array up to index n - 1.
In terms of space complexity, how does implementing an iterative quicksort compare to using its recursive counterpart on large datasets?
Iterative quicksort generally uses less stack space due to avoidance of recursive calls.
Space usage remains unchanged as both methods partition data similarly.
Recursive version often uses less space because it has fewer variable instantiations.
It requires more memory due to additional structures needed for iterations.
What is the return type of a method that does not return any value?
Int
String
Void
Boolean
Which of the following best describes a case where a method in Java is overloaded?
A subclass uses the same method signature to provide a specific implementation.
Two methods have the same name, parameter types, and return type in one class.
The same method name is used with different parameter lists.
The method name and return type are changed but parameters stay the same.
In object-oriented programming, what do we call a template for creating objects?
Array.
Function.
Class.
Procedure.

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What alteration to a recursive Fibonacci sequence algorithm would most effectively reduce its computational time complexity?
Using multiple threads to handle separate recursive calls concurrently.
Implementing memoization to store previously calculated results.
Increasing the base case threshold value from 0 and 1 to 0 through 10.
Doubling the decrease factor in each recursive call.
Which statement about breakpoints in debugging is true?
Breakpoints automatically correct syntax errors when reached.
Breakpoints reduce memory usage by pausing execution.
Breakpoints compile portions of code selectively for quicker runs.
Breakpoints allow you to pause program execution at a specific line of code.
What is the purpose of using a debugger in programming?
To enhance the graphical user interface of the application.
To encrypt source code for security purposes.
To increase the speed of the program execution.
To find and fix errors in the code.