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, 15, ['2345', 'c', 'B', '2961', '189', '2409', '3715', '6803', '3947', 'u', '7099', 'w', 'f', 'M', 'Q', '7533', 'm']
answer:
QMfw7099u39476803371524091892961B


question:
3, 7, ['169', '1947', 'i', 'w', '8871', '9759', '5389', '3353', 'N', 'v', '665', 'R', 'q', '2323', 'd', 'N', '4211', 'A', 'A', '9571', '1129', 'W']
answer:
538997598871wi


question:
9, 19, ['5773', 'F', 'z', '3739', 'Q', '7821', '4263', '3805', '1045', '1439', 'J', '4209', '3591', '5191', 'C', 'a', '9099', '7187', '1553', '7681', 'j', 'Z', '6393', 'F', 'x', '3221', 'q', '6161', 'h', 'P']
answer:

155371879099aC519135914209J14391045