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: 18, 22, ['2445', 'L', 'x', 'i', '9929', '3105', 'v', '445', 'O', '353', 'j', '9877', 'D', 'U', '885', '9485', 'V', '8219', '2963', '685', '1659', 'U']

SOLUTION: U165968529638219

PROBLEM: 10, 20, ['7655', 'T', 'i', 'R', 'O', 'y', '2217', '7443', '2467', 'k', '5471', 'e', 'z', 'x', 't', '4181', 'd', 'r', '2879', 'j', '8981', 'y', 'T', 'Y', 'R']

SOLUTION: j2879rd4181txze5471k

PROBLEM: 8, 11, ['5303', 'F', '4433', '2223', '2317', '1965', 'X', 'j', 'Y', '1633', '1747', '5771', 'U', '6491']

SOLUTION:
17471633Yj