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: 2, 10, ['V', '7549', '4639', '3825', '4619', 'w', '7667', '557', 'L', 'z', '1883', 'k', 'j', 'o', 'p', '3945', 'u', 'l', '5637']

SOLUTION: zL7557667w9164528393649457

PROBLEM: 12, 29, ['4267', '7621', 'e', 'd', '2685', '3417', 'V', 'E', '3849', '6875', '1093', '9451', '3257', '6313', 'K', 'j', '3551', 'l', 'J', 't', 'V', '7965', '307', 'A', '3733', 'Y', '8649', '8475', 'X']

SOLUTION: X57489468Y3373A7035697VtJl1553jK313675231549

PROBLEM: 16, 24, ['k', 'f', 'S', '8035', 'x', 'j', 'X', 'w', 'B', 'Y', '3341', '8355', 'a', '2739', '6339', '9695', '3489', '1101', 'M', 'X', 'h', 'S', '8121', '8085']

SOLUTION:
58081218ShXM101198435969