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: 5, 12, ['7745', 'U', 'H', '6603', '3997', 'C', '9985', '7383', '3853', 'D', '6269', 'r', '3309', 'a', '7801', 'i', '5357']

SOLUTION: r6269D385373839985C3997

PROBLEM: 3, 5, ['3897', 'j', 'o', 'v', '6633', 'b', '3875', 'J']

SOLUTION: 6633vo

PROBLEM: 6, 15, ['G', 'W', 's', '5559', '6817', 'M', 'E', '1839', '3123', '2881', '7411', '6275', 'R', 'w', 'Q']

SOLUTION:
QwR62757411288131231839EM