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: 4, 6, ['7653', 'd', '7091', '191', 'Z', '13', 'k', 'x', 'N', '9543', '4647', 'W']

SOLUTION: 13Z191

PROBLEM: 7, 11, ['2481', 'b', 'O', '617', 'B', '9201', 'R', '1063', '3715', 'g', '8881', '3613', 'F']

SOLUTION: 8881g37151063R

PROBLEM: 7, 18, ['C', '7681', 'n', 'C', 'w', '1483', 'Z', 'L', 'O', '313', 'f', 'A', 'R', '5509', '8827', 'm', 'n', '9423', 'j', '5871', '6691', 'e', 'f']

SOLUTION:
9423nm88275509RAf313OLZ