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:
15, 18, ['9099', '2041', '7065', '1323', '2267', '5877', 'r', 'j', '4411', 'u', 'V', '4919', '6401', '8449', 'X', 'H', 'z', 's', '2543', '4643']
answer:
szHX


question:
1, 5, ['9965', 'a', 'P', 'F', '3811', '4375']
answer:
3811FPa9965


question:
5, 26, ['W', 'g', 'W', 'P', 'U', '5831', 'F', '7909', 'E', '5505', '6875', 'Q', '949', '5651', '4229', '751', '9783', '8885', '8203', '3289', 'G', 'c', 'h', 'V', 'w', '869', '5497', '4651', '5653']
answer:

869wVhcG328982038885978375142295651949Q68755505E7909F5831U