int[] intArr = {15, 30, 45, 60, 75}; intArr[2] = intArr[4]; intArr[4] = 90; What are the values of each element in intArr after this code has executed?

Question

Options

• A15, 60, 45, 90, 75
• B15, 90, 45, 90, 75
• C15, 30, 75, 60, 90
• D15,30,90, 60, 90
• E15, 4, 45, 60, 90

• A
  11% (5)
• B
  4% (2)
• C
  83% (39)
• D
  2% (1)

Explanation

Option C is correct because the code executes two sequential operations: first, intArr[2] = intArr[4] copies the value at index 4 (which is 75) into index 2, giving {15, 30, 75, 60, 75}; then intArr[4] = 90 overwrites index 4 with 90, yielding the final result {15, 30, 75, 60, 90}.

• A is wrong because index 1 was never modified - it stays 30, not 60.
• B is wrong for the same reason (index 1 unchanged), and also misplaces 90 at index 1.
• D is the most tempting distractor: it puts 90 at index 2, which would only be correct if the two lines were reversed - it confuses the order of execution.
• E is wrong because it substitutes the index number (4) as a value at index 1, a classic confusion between an index and its contents.

Memory tip: Read array assignments right-to-left like math - the value on the right side is captured at that moment, so trace the array state line by line and never assume a later assignment retroactively changes an earlier copy.

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