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, 2, ['R', 'a']
answer:
aR


question:
5, 7, ['n', 'N', 'n', 'M', 'w', 'i', '5239', '8379', 'G', '6635', '6913', '8461', 'c', 'b', '9023', 'r', '6015', 'q', 'G', 'v', 'W', '3315', 'i', '9759', 'D']
answer:
5239iw


question:
2, 16, ['4605', 'A', '6119', 'g', '2801', '9263', 'X', 'c', 'n', '3919', '5411', 'j', 'N', 'F', 'A', 'u', '7819', 'c']
answer:

uAFNj54113919ncX92632801g6119A