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, 4, ['s', 'n', '6721', 'W', 'H']

SOLUTION: W6721ns

PROBLEM: 1, 2, ['231', '4551', '3343']

SOLUTION: 4551231

PROBLEM: 1, 2, ['3873', 'R', '7275', 'I', '849', 'k', 'w', 'A', 'q']

SOLUTION:
R3873