def delta_decode(in_array):
    """A function to delta decode an int array.

    :param in_array: the input array of integers
    :return the decoded array"""
    if len(in_array) == 0:
        return []
    this_ans = in_array[0]
    out_array = [this_ans]
    for i in range(1, len(in_array)):
        this_ans += in_array[i]
        out_array.append(this_ans)
    return out_array
def delta_decode ( in_array ) : if len ( in_array ) == 0 : return [ ] this_ans = in_array [ 0 ] out_array = [ this_ans ] for i in range ( 1 , len ( in_array ) ) : this_ans += in_array [ i ] out_array . append ( this_ans ) return out_array
A function to delta decode an int array.

    :param in_array: the input array of integers
    :return the decoded array