How can I print an array in reverse?

问题:

This is my array code and I need to print it in reverse.

public class Array1D {
    public static void main(String[] args) {
        int[] array = new int[3];
        array[0] = 1;
        array[1] = 2;
        array[2] = 5;
        for (int i = 0; i < array.length; i++) { //loop
            System.out.print("array["+i+"]=");
            System.out.println(array[i] + "   ");
        }
        System.out.println("the last element in the matrix = " + array[array.length - 1]); // finding the last element in the array
        System.out.println("   ");
    }
}

回答1:

Just reverse the direction of your for loop. Right now it is counting from 0 to the length, have it count from the length to zero

for (int i = array.length-1; i >= 0; i--)

回答2:

If you really want to reverse the array, use:

ArrayUtils.reverse(int[] array)

But I suggest using a reversed loop.

回答3:

try like this (sample pseudocode) :

for (i=array length-1;i=>0;i--){
print(i);
}