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, 5, ['Y', 'O', 'Q', 'l', 'E']

SOLUTION: ElQO

PROBLEM: 3, 5, ['2849', 'J', 'L', '2347', '7219', 'a', 'Q', 'U', '6865', 'O']

SOLUTION: 91277432L

PROBLEM: 3, 22, ['9105', '9213', '6687', 'd', 'j', '1', '4759', 'U', 'G', 'N', 'B', '3125', 'D', '9377', 'Q', '9553', 'h', '2031', 'y', 'j', 'M', 'G', '4471', 'l', '6795', 'b', 'U']

SOLUTION:
GMjy1302h3559Q7739D5213BNGU95741jd7866

