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, 5, ['5837', 'M', 'H', '4703', 'K', 'k', 'P', 'f', '2471', '9617', '453', '9105', 'w']

SOLUTION: K4703

PROBLEM: 2, 4, ['i', '4995', '8615', 'O']

SOLUTION: O86154995

PROBLEM: 13, 15, ['S', 'J', '5235', '4287', 't', 'W', 'd', 's', 'T', '3681', '7713', '769', 'R', 'G', '2921', 't', 'S']

SOLUTION:
2921GR