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, 2, ['z', '3345', 'l', '2657', 'J', '4313', 'K', '5307', '9087']

SOLUTION: 5433

PROBLEM: 5, 12, ['9227', 'P', 'T', 'k', 'p', '9785', '2047', 'M', '827', '2815', 'C', '7071', 'Y', 'y', '3657', '9961', 'o']

SOLUTION: 1707C5182728M74025879p

PROBLEM: 13, 18, ['9065', '7221', 'F', 'F', '5077', 'v', '2893', '2625', '7595', '6771', '6821', 's', '7173', '351', '3057', 'P', '2295', '6835', '6829', '6995', '4099', 'Q', '9363', 'i', '1643', 'c', '2167', 'U', 'U', 'l']

SOLUTION:
53865922P75031533717