instruction:
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.
question:
1, 4, ['6145', 'D', '2827', 'y']
answer:
y2827D6145


question:
1, 3, ['u', 'D', '6391']
answer:
6391Du


question:
7, 8, ['z', '4705', '131', '3529', '9459', 'R', 'Z', '4137']
answer:

4137Z