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, 12, ['n', '1995', '9023', '6583', 'e', '1551', '1189', '451', 'I', '9021', '9823', '2777', 'u', '9695', 'p', 'C', '3255', '79', '6763', 'a']
answer:
277798239021I45111891551e65839023


question:
6, 10, ['3799', '8635', '8411', 'Q', '4813', 'v', '9781', 'b', 'B', 'R', '5555', '2269', '7573', 'j', 'G', '6001', 'l', '209', '763', 'b', 'j', 'f', '9975', '2581']
answer:
RBb9781v


question:
25, 27, ['t', 'I', 'y', '8907', '6967', '273', '1655', '9801', '2833', '4763', 'c', 'E', '8177', 'X', 'i', '5953', '9325', '5083', '5223', 'C', '3137', '1971', 'm', 'M', 'C', 'U', 'y', '8611', '6299']
answer:

yUC