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: 3, 5, ['w', 'i', 'X', '9493', 'g', 'K', 'h', 'X']

SOLUTION: g3949X

PROBLEM: 8, 15, ['l', 'p', '7691', 'q', '5663', '41', 'P', '2779', '7265', 'V', '4931', '8979', 'l', 'l', 'l', '45', '1245', 'F', '1139', '3531', '5337', '369', 'g', 'Q']

SOLUTION: lll97981394V56279772

PROBLEM: 10, 12, ['2635', '3077', 'D', 'H', '9083', 'V', 'w', '4257', 'a', '7653', '5703', '7589', 'x', '7367', 'f', '9953']

SOLUTION:
985730753567