Boolean Logic & Conditional Statements
What impact does implementing short-circuit evaluation have on an algorithm's control flow when dealing with compound boolean expressions in "if" statements?
It randomizes which parts get executed, thereby potentially adding unpredictability into the decision-making process.
Short-circuit evaluation may lead to certain parts being skipped entirely depending on earlier subexpressions' truth values.
No impact whatsoever as it solely affects readability while leaving control flow unaltered.
It forces all subexpressions within boolean compounds to always be evaluated fully before deciding.
What is the purpose of using an else if statement in a program?
To terminate the program when a certain condition occurs.
To provide an additional conditional branch to the if statement.
To loop through a set of values until a condition is met.
To declare and initialize variables only if a condition is true.
Which of these changes would correctly cause an output of “Average” when inputting a speed value of ‘50’ into this speed assessment code?
Change ‘speed’<100 to ‘speed’<75 in first condition and add new condition 'else-if(speed>50)' before final 'else'.
Replace final “Slow’ with “Average”
Add additional check ’speed==50’in first ‘else-if’
Remove ‘&& speed<=100’ from second condition only.
Assuming there's an integer variable age
, which conditional structure would correctly print "Adult" when age is at least eighteen, otherwise "Minor"?
if(age >17) {System.out.println("Minor");}else{System.out.println("Adult");}
if(age ==18) {System.out.println("Adult");}else{System.out.println("Minor");}
if(age >=18) {System.out.println("Adult");}else{System.out.println("Minor");}
if(age <=18) {System.out.println("Adult");}else{System.out.println("Minor");}
Which outcome best represents a potential downside when excessively using nested else-if structures to navigate complex decision trees within an algorithm?
Reduced memory usage as no extra space is required for alternates.
Increased execution speed due to better branch prediction by processors.
Enhanced readability through clear delineation of decision branches.
Decreased maintainability due to difficulty understanding and updating code logic.
Given a complex system with multiple levels of inheritance and polymorphism, which statement correctly identifies when a superclass constructor gets called during object creation?
Superclass constructors are never called directly; they are only invoked through subclass methods using super keyword.
Subclass constructors must explicitly call superclass constructors using super().
Superclass constructors are called before sub-class constructors during object instantiation starting from the topmost parent down.
Superclass constructors are called after all subclass constructors have finished executing.
What keyword should follow an ‘if’ block to provide an alternative path when the ‘if’ condition is not met?
except
else
elif
otherwise

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In Java, how does adding an extra condition to an existing if
statement affect program execution?
Extra conditions cause all subsequent unrelated if
statements to become else-if
s automatically.
Conditions added have no effect unless they are encapsulated using brackets after each condition.
More conditions mean stricter criteria must be met for that code path to execute.
Adding conditions prevents any part of your program from running due to syntax errors.
What output will the following code segment produce if n=8?
java
int n = 8;
String result = "";
if(n < 10)
result += "Less than ten,";
else
result += "Greater than or equal to ten";
System.out.println(result);
"Less than ten,"
""
"Greater than or equal to ten"
"Less than ten,Greater than or equal to ten"
Which method returns the largest divisor between 1 and 10 that a number is divisible by?
largestDivisorLessThanTen
isDivisibleByTen
isLeap
checkLeapYear