Merge sort(not able to find the error)

#1

public class Mergerecursion
{
public static void main(String[] args)
{
int[] arr={20,10,30,50,60,5,80,25};
int[] ans= mergeSort(arr, 0, arr.length-1);
for(int val: ans)
{
System.out.println(val+" ");
}

}


public static int[] mergeTwoSortedArrays(int[] arr1, int[] arr2)
{
    public static int[] mergeSort(int[] arr, int low, int high)
    {
        if(low==high)
        {
            int[] base= new int[1];
            base[0]=arr[0];
            return base;
        }
        int mid=(low+high)/2;

        int[] fh= mergeSort(arr, low, mid);
        int[] sh= mergeSort(arr, mid+1, high);

        int[] merge= mergeTwoSortedArrays(fh, sh);
        return merge;
    }
}

}

#2

@jdkatti,
you have put a function inside a function.

public static int[] mergeTwoSortedArrays(int[] arr1, int[] arr2) this contains the function: public static int[] mergeSort(int[] arr, int low, int high). Which is not allowed.

#3

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