TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
PROBLEM: 8, 13, ['5437', '9055', 'j', '3087', '4775', 'a', 'Z', '5153', 'w', 'j', 'W', 'x', 'e', '5617', '9221', '2469', 'C', 'j', '2781', 'Z', '3005', '8983', '7937', '4671', '9745', '5467']

SOLUTION: exWjw3515

PROBLEM: 2, 17, ['781', '1949', '8017', 'I', 'F', 'k', 's', 'f', '9531', '3769', '8135', 'R', '7643', 'v', '6217', '4085', 'M', '1993']

SOLUTION: M58047126v3467R531896731359fskFI71089491

PROBLEM: 13, 14, ['7419', '6655', '771', '4859', '8997', '919', '401', 'g', 'y', '7829', 'I', 'B', '1355', 'r', '4187']

SOLUTION:
r5531