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, ['M', '9885', 'k', '8111']

SOLUTION: k9885M

PROBLEM: 12, 17, ['T', 'o', 'e', '5003', 'r', '1309', '6761', 'h', '7471', '7863', '8521', 'L', '8941', '4289', '5099', '9433', 'U', '387', '5857', '9301', '5107', 'J', '1949', '7591', '4167', '1385', '4517', 'A']

SOLUTION: U9433509942898941L

PROBLEM: 21, 21, ['2419', 'm', '289', 'g', 's', 'U', '8461', 'q', '3177', 'J', '3877', 'w', 'b', '4411', '9161', '7461', 'y', '8151', 'v', '4145', 'B', 'D', 'X', '7763', '143']

SOLUTION:
B