TASK DEFINITION: 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.
PROBLEM: 5, 12, ['7745', 'U', 'H', '6603', '3997', 'C', '9985', '7383', '3853', 'D', '6269', 'r', '3309', 'a', '7801', 'i', '5357']

SOLUTION: r6269D385373839985C3997

PROBLEM: 8, 10, ['o', '1199', '5255', '3357', '2587', '9041', 'E', '8481', 'p', '8819', 'D', '5493', '7309', '4563', '4763']

SOLUTION: 8819p8481

PROBLEM: 8, 8, ['k', 'Q', '1231', '4715', '5999', '6147', '4479', '4395', '3499', 'a', 'B', '8147', 'R', '4911', 'T']

SOLUTION:
4395