David Shipman
Reverse integer array program
1 Answer(s)      4 years and 4 months ago
Posted in : Java Beginners

Been tasked with the following question:

Write a method that accepts an integer array and returns a new array with all the elements in reverse order. For example, if the input array is [2, 4, 6, 8] the output array is [8, 6, 4, 2]. Then call your method from the main method.

I have this so far:

```public static int [] reverse (int a[]){
for ( int i = 0 ; i < a.length/2 ; i++ ){
int temp = a[i] ;
a[i] =  a[a.length-i-1] ;
a[a.length-i-1] = temp ;

}
return a;
}

public static void main(String[] args) {
int a [] = {2,4,6,8};
```

December 7, 2012 at 11:48 AM

Here is an example of reversing an integer array.

```import java.util.*;
class ReverseArray{
public static int [] reverse (int a[]){
for ( int i = 0 ; i < a.length/2 ; i++ ){
int temp = a[i] ;
a[i] =  a[a.length-i-1] ;
a[a.length-i-1] = temp ;

}
return a;
}

public static void main(String[] args)
{
int a[]=new int[5];
Scanner input=new Scanner(System.in);
System.out.println("Enter five array elements: ");
for(int i=0;i<a.length;i++){
a[i]=input.nextInt();
}
int array[]=reverse(a);
System.out.println("Array In Reverse Order: ");
for(int i=0;i<array.length;i++){
System.out.println(array[i]);
}
}
}
```

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