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: 3, 15, ['2345', 'c', 'B', '2961', '189', '2409', '3715', '6803', '3947', 'u', '7099', 'w', 'f', 'M', 'Q', '7533', 'm']

SOLUTION: QMfw7099u39476803371524091892961B

PROBLEM: 19, 28, ['1857', '7871', 'N', 'j', 'f', 'y', 'F', 'M', '883', 'v', '7135', 'd', 'y', 'Z', 'K', '9301', 'm', '1725', 't', '1675', '6241', 'H', '5189', 'f', '2581', 'u', '465', '3677']

SOLUTION: 3677465u2581f5189H62411675t

PROBLEM: 3, 6, ['x', 'C', 'G', 'H', 'n', '2533']

SOLUTION:
2533nHG