CODEWITHSUNDEEP
java
miltacker
miltacker

Reputation: 3

How come I can't count downwards on an array in Java?

I am currently trying to take the elements of an array and reverse its order in Java. How come I cannot print the elements of the array by counting downwards using a for loop without changing the actual ordering of elements in my array?

private void printArray(int[] array) {
    for (int i = array.length; i >= 0; i--){
        println(array[i]);
    }
}

Upvotes: 0

Views: 133

Answers (2)

fge
fge

Reputation: 121810

Array indices start at 0 and end at array.length - 1. Here, you get an ArrayIndexOutOfBOundsException since your first read is past the end of the array (int i = array.length;).

Do:

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

Upvotes: 7

Ed Heal
Ed Heal

Reputation: 60017

Try

for (int i = array.length - 1; -1 != i; --i){

As indexes start from 0

Upvotes: 1

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