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: 2, 8, ['B', '6435', 'S', 'W', 'k', '1127', 'v', 't', 'G', 'N', '7331', 'O', 'b', 'V', '3141', 'E', 'L', 'F', '2333', 'y', '9783', 'u', 'T']

SOLUTION: tv1127kWS6435

PROBLEM: 16, 20, ['7675', 'c', '9729', '8219', 'P', '9939', '9217', 'C', '4067', '549', 'g', 'w', '3793', 'I', 'U', 'R', 'S', '2615', 'h', 'M', '889']

SOLUTION: Mh2615SR

PROBLEM: 14, 20, ['5653', 'B', 'P', 'o', 'C', 'H', 'j', 'Z', '793', 'n', '2371', '2833', 'A', 'C', 's', '7853', 'v', 'c', 'N', '8797', '6925', 'E', 'J', 'A']

SOLUTION:
8797Ncv7853sC