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: 1, 2, ['5111', 'U', '441', '8381']

SOLUTION: U1115

PROBLEM: 1, 1, ['4571', '3997']

SOLUTION: 1754

PROBLEM: 8, 9, ['3089', 'O', '7349', 's', '1603', 'X', 'q', '1815', '2871', '1223', '6615']

SOLUTION:
17825181