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: 3, 5, ['l', '7281', 'I', '9805', '9063', 'T', 'f', 'k', 'X', 'D', 'j', '9739']

SOLUTION: 36095089I

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

SOLUTION: 1754

PROBLEM: 10, 14, ['943', 'u', 'h', '6261', '7105', '4133', '7969', 'd', 'j', 'C', '6313', 'd', '8945', '297', '3881', '6377', 'X', '31', 'a', 'k', '307', 'Z', 'U']

SOLUTION:
7925498d3136C