Nested Iteration · AP Computer Science A

AP Computer Science A Quiz

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A student is comparing each pair of names to find matching first letters. Consider the following Java code.

String[] names = {"Ava", "Ben", "Amy"};
int matches = 0;
for (int i = 0; i < names.length; i++) {
  for (int j = i + 1; j < names.length; j++) {
    if (names[i].charAt(0) == names[j].charAt(0)) {
      matches++;
    }
  }
}
System.out.println(matches);

What is the output of the following nested loop?

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