TASK DEFINITION: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
PROBLEM: 6, 10, ['W', '4485', 'x', '4885', '779', '5681', '5085', '3523', '2869', '3817', 'D', 'J', '5781', '4703', '8409', '7397', '1743', 'n', 'O', 'O', 'I', '2341', 'd']

SOLUTION: 38172869352350855681

PROBLEM: 2, 22, ['E', '9437', 'R', 'M', 'p', 'A', '7261', '4163', '8357', '6555', 'I', 'T', '5471', 'G', 'S', '3447', 'C', '5845', 'I', '3817', 'p', '6781']

SOLUTION: 6781p3817I5845C3447SG5471TI6555835741637261ApMR9437

PROBLEM: 4, 27, ['k', 'S', 'I', '3329', '9687', 'P', 'N', '4309', 'K', '259', '1249', '4169', 'O', '7353', '3749', '6411', 'Y', '5777', '187', 's', 't', 'j', 'A', '4493', 'a', 'S', '9697']

SOLUTION:
9697Sa4493Ajts1875777Y641137497353O41691249259K4309NP96873329