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:
3, 4, ['P', '7535', '9919', '5299', '8521', 'q', 'q', 'i']
answer:
52999919


question:
12, 13, ['x', 'V', '4453', 'Q', 'r', 'p', 'M', '2321', 'Q', '9461', 'h', 'e', 'D', 'F', 'o', 'd', 'G', 'A', 'A', 's', '2777', '3963', '3363', 'C', 'X', 't']
answer:
De


question:
6, 19, ['3667', '9517', '9527', 'j', '1867', 'f', '7465', '1837', 'u', 'T', '5983', '2891', 'W', 'D', '7139', 'K', 'u', 'F', 'J', 'M', '4105', 'e', 'y', 'x', '8531', '1255']
answer:

JFuK7139DW28915983Tu18377465f