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: 13, 13, ['1575', 'D', '1335', '2335', 'D', '9893', 'U', 'j', '5145', '6041', '2655', 'r', '5243', '8745', '7439']

SOLUTION: 3425

PROBLEM: 2, 5, ['n', '8897', '6611', '2857', 'p']

SOLUTION: p758211667988

PROBLEM: 6, 27, ['3889', '7069', '3245', 'X', '3425', 'b', 'R', '4345', '8701', 'B', 'k', '543', 'G', 'A', '4167', 'z', '1395', '9197', '3883', 't', 'q', '6305', '6233', 'V', '7127', 'j', 'g']

SOLUTION:
gj7217V33265036qt388379195931z7614AG345kB10785434Rb

