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: 1, 3, ['8975', '5175', 'X']

SOLUTION: X51758975

PROBLEM: 13, 19, ['I', 'e', 'D', '6689', '6047', '6839', '6523', 'e', '6939', '653', '5701', 'r', '7005', 'e', '7821', 'w', '6221', '3243', 'H', '1305', 'w', '3995', '1873', '6035', '5543', 'M', '8079', '6091', 'B']

SOLUTION: H32436221w7821e7005

PROBLEM: 12, 21, ['Z', 's', '5399', '1205', '6471', 'r', '8519', 'U', 'n', '97', 'F', '4905', 'E', 'J', '9125', '7801', 'W', 'W', '5509', 'E', 'm', 'T']

SOLUTION:
mE5509WW78019125JE4905