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, 10, ['3193', '1089', '3677', '2973', 'A', 'f', '3047', '6709', '4089', 'X', 'A', 'j', '5703', '2787', '2429', '9605', '6061', 'G', 'Y', 'b', '8741', '4199', 'f']

SOLUTION: X408967093047fA

PROBLEM: 1, 4, ['O', 't', '8177', 'D']

SOLUTION: D8177tO

PROBLEM: 15, 20, ['3815', 'K', '2357', '2323', 'v', '3189', '4049', '5917', 'y', 'k', '7987', 'm', 'm', 'N', 'l', 'W', 'z', 'e', 'S', '7357', '5515', '8277', '6519', 'x', 'V', '8703']

SOLUTION:
7357SezWl