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: 7, 12, ['R', '3623', 'M', '5183', '1901', '7279', 'w', 'L', '2779', '6019', 'Q', '1393', '1989', 'h', 'Q', 'I', '915', '4425']

SOLUTION: 1393Q60192779Lw

PROBLEM: 9, 15, ['9275', 'R', 'c', '897', 'm', '2477', '7233', '3477', 'd', 'D', '2765', 'f', '5149', 'S', 'R', 'r', '1531', 'M', '7997', '2057', '1261', '8321', 'H', '2943', '8893', 'v', 'X']

SOLUTION: RS5149f2765Dd

PROBLEM: 8, 15, ['63', '8469', '4047', 'Y', 'U', '7453', '2073', '5683', 'u', 'q', '5225', '4015', '4433', '5021', 'q', '3861', '9811', '3919', 'g', 'j', 'u', '1225', '6027', 'i']

SOLUTION:
q5021443340155225qu5683