Coding interview preparation

Time Complexity of Sorting Algorithms

Let’s analyze the Python code snippet from the image:

python
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def add_n(a, b):
    return (a + b)

a = 5
b = 5

print(add_n(4, 3))
Step-by-step explanation:
A function add_n(a, b) is defined to return the sum of a and b.

The variables a = 5 and b = 5 are declared but not used inside the function call — they are irrelevant in this context.

The function is called with explicit arguments: add_n(4, 3), so:

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return 4 + 3  # = 7

✅ Correct answer: C. 7

a = "10" → Variable a is assigned the string "10".

b = a → Variable b also holds the string "10" (but it's not used afterward).

a = a * 2 → Since a is a string, multiplying it by an integer results in string repetition.

"10" * 2 results in "1010"

print(a) → prints the new value of a, which is "1010".

✅ Correct answer: D. 1010

Let's analyze the Python code step by step:

python a = "Sun" b = "Moon" c = a a = b b = c print(a + " and " + b) Step-by-step breakdown: 1. `a = "Sun"` → variable `a` now holds `"Sun"`. 2. `b = "Moon"` → variable `b` now holds `"Moon"`. 3. `c = a` → variable `c` is assigned the value of `a`, which is `"Sun"`. 4. `a = b` → variable `a` is now assigned the value of `b`, which is `"Moon"`. 5. `b = c` → variable `b` is now assigned the value of `c`, which is `"Sun"`. Final values: -a = "Moon" -b = "Sun"` So, the `print(a + " and " + b)` will output:

Moon and Sun ✅ Correct answer: A. Moon and Sun

What do you think?

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