Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 18, 23, ['E', '3977', '5965', 'x', 'S', 'C', '7031', 'o', '2039', 'g', 'R', 'Q', 's', '6553', 'k', 'C', 'V', '2103', 's', 'G', '3581', '3013', '745', '3601', '9827', '4389']

74530133581Gs2103