You will make you very own ArrayUtil class! Implement the following methods without using any built in methods. Happy Hacking!

• isEmpty(array) Returns true if the array is empty
• append(original, value) Adds the new value to the end and returns the array
• clone(original) Copies the array and returns the copy
• subArray(original, from, to) Copies the array values between the specified range and returns the range of values as a new array
• equals(arr1, arr2)Returns true if two arrays are equal
• fill(int[] original, int value) Sets all the positions in an array to the given value and returns
• indexOf(original, value) Returns the index of the first occurrence of the value in the array, -1 if the value is not found
• remove(original, value) Copies the array, removes the first occurrence of the value in the array, and returns
• reverse(original) Reverses the order of the elements in the array