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, 3, ['i', '7465', '1315']

SOLUTION: 51315647

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

SOLUTION: 91277432L

PROBLEM: 10, 29, ['w', 'i', 'P', 'b', '1753', 'l', 'S', '7557', '7475', 'G', '9065', 'x', '5379', '8085', '5323', '1815', 'c', 'z', '1657', 'Y', 'c', '3867', '2549', 'K', '85', 'f', 'j', '3181', '9869', 'd']

SOLUTION:
96891813jf58K94527683cY7561zc5181323558089735x5609G