Given the code fragment: Which two code fragments can be independently inserted at line n1 to enable the code to print the elements of the array in reverse order? (Choose two.) A. B. C. D. E.
Answer is AE.
To test:
public static void main(String[] args) {
int array[] = {10, 20, 30, 40, 50};
int x = array.length;
// Answer A - Ok
/*
while (x>0) {
x--;
System.out.println(array[x]);
}
*/
// Answer B - ArrayIndexOutOfBoundsException // x = -1
/*
do {
x--;
System.out.print(array[x]);
} while (x >= 0);
*/
// Answer C - ArrayIndexOutOfBoundsException // x = 5
/*
while (x >= 0) {
System.out.print(array[x]);
x--;
}
*/
// Answer D - ArrayIndexOutOfBoundsException // x = 5
/*
do {
System.out.print(array[x]);
--x;
} while (x > 0);
*/
// Answer E - Ok
/*
while(x > 0) {
System.out.println(array[--x]);
}
*/
}
The correct answer is AE. Remember that when we are going to make a reverse index we must put ">= 0", because if we put "=0" it will return an exception.
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