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: 7, 8, ['k', '59', 'Q', 'b', 'N', '5153', 'm', 's', '1703', 'i', 'E', 'x', '4727', '9723', '9305', '8843', '5295', '4281', '555']

SOLUTION: sm

PROBLEM: 3, 5, ['j', '239', '9689', 's', 'C', 'w']

SOLUTION: Cs9869

PROBLEM: 3, 14, ['6591', 'k', '4751', '4359', '5375', 'y', 'm', 'f', 'W', '1623', 'o', '5593', '8743', '2077', 'o', 'X', '9301', '9189']

SOLUTION:
770234783955o3261Wfmy573595341574

