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, 2, ['z', '3345', 'l', '2657', 'J', '4313', 'K', '5307', '9087']

SOLUTION: 5433

PROBLEM: 11, 18, ['W', '5215', 'G', '6229', 'z', 'R', 'e', 'U', '5847', 'L', '1587', '7287', 'a', 'S', '4887', 'B', 'F', 'h', '7409', '8297', 'h', 'N', 'E', '9925', 'B', 'l', '6091', '1345']

SOLUTION: hFB7884Sa78277851

PROBLEM: 14, 18, ['C', 'S', 'Q', '1673', 'Y', '687', 'v', 'L', 'p', '3395', '4647', '6873', 'Z', 'd', '8137', '6537', '9343', 'J', '2271', 'L', 'J', 'd']

SOLUTION:
J343973567318d