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:
5, 7, ['I', 'R', 'p', '3901', '3837', '9227', '6961']
answer:
696192273837


question:
5, 18, ['u', '3123', 'g', 'r', 'M', '559', 'F', 'F', '3229', '3207', 'w', 'X', 'U', 'j', 'f', 'p', '7623', '6121', '2279', 'v']
answer:
61217623pfjUXw32073229FF559M


question:
16, 26, ['J', 'P', '261', '2181', '9607', '2205', '7509', '3049', '123', '5785', 's', 'S', '7211', '9623', '255', 'j', '3145', 'z', 't', 'U', '2287', 'L', 'E', '7149', 's', 'c', 'A']
answer:

cs7149EL2287Utz3145j