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, 9, ['O', '2627', 'M', '7201', '8401', 'Y', 'H', '9125', '3767']

SOLUTION: 37679125HY84017201M2627O

PROBLEM: 17, 21, ['G', '6731', '5011', '5327', 'K', '1601', '7927', 'H', 'Q', '2519', '7897', 'G', 'x', '4253', 'g', 'o', 'D', 'A', '6515', 'o', '9255', 'V', '6725', 'l', '5771', '783']

SOLUTION: 9255o6515AD

PROBLEM: 4, 5, ['E', '7273', '9761', 'C', '4131', '7229', 'e', '7771', 'D', '8209', '37', '5363', '7405', '3559', 'd', 'U']

SOLUTION:
4131C