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: 6, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']

SOLUTION: 1195d

PROBLEM: 4, 5, ['B', 'H', 'y', 'y', 'K']

SOLUTION: Ky

PROBLEM: 2, 10, ['9789', 'h', 'C', '8243', 'S', '9379', 'N', '1463', '671', 'z', 'r', 'q', '6461', '6797', '5681', 'l', '9371', '8985', 'K', '2403', 'j', 'N', 'M', '6395', '339', '4057', '3765', 'E', 'i']

SOLUTION:
z1763641N9739S3428Ch

