Java Topic Practice

Sorting and Efficiency

Practice mode with 15 Java-focused questions, immediate answer checks, and explanations.

All Java Topics Practice Center

For practice use only.

Sorting and Efficiency MCQ Practice

Sorting and Efficiency Java practice with 15 questions, code tracing, and a worked explanation for every answer.

Question 1 of 15

Answered 0 of 15

Choose one answer.

Code Tracing 01 - Sorting and Efficiency: track the final printed value.

int[] data = {4, 9, 2, 7, 5, 1};
int swaps = 0;
for (int i = 0; i < data.length - 1; i++) {
  for (int j = 0; j < data.length - 1 - i; j++) {
    if (data[j] > data[j + 1]) {
      int t = data[j];
      data[j] = data[j + 1];
      data[j + 1] = t;
      swaps++;
    }
  }
}
System.out.print(swaps);

A6B0C10D11