TECHTRIX2025 BUGHUNT SET4

What is the time complexity of searching for an element in an unordered array of n elements?

• O(1)

• O(log n)

• O(n)

• O(n²)

What will be the output of the following Python code? x = "Hello" y = x[0] = "M" print(x)

• "Mello"

• "Hello"

• Error

• None

What will be the output of the following JavaScript snippet? console.log(2 + "2" - 1);

• 21

• 3

• "21"

• 22

Which data structure follows First In First Out (FIFO) principle?

• Stack

• Queue

• Heap

• Tree

What will happen if you try to access an array index out of bounds in C?

• Compilation error

• Runtime error

• Undefined behavior

• Program terminates gracefully

Identify the error in the following Java statement: int x = 10.5;

• Syntax error

• Logical error

• No error

• Runtime error

What will be the output of the following C code? #include int main() { int x = 5; printf("%d", x++ + ++x); return 0; }

• 11

• 12

• 10

• Undefined behavior

Which of the following sorting algorithms has the worst-case time complexity of O(n²)?

• Merge Sort

• Quick Sort

• Bubble Sort

• Heap Sort

What will be the output of the following Python code? def func(a=[]): a.append(5) print(a) func() func()

• [5] [5]

• [5] [5, 5]

• None None

• [5] [5] [5]

What is the output of console.log(typeof null); in JavaScript?

• "null"

• "object"

• "undefined"

• "number"