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: 2, 3, ['W', 'Y', '6265', 'D']

SOLUTION: 6265Y

PROBLEM: 3, 4, ['Z', 'P', '7969', '7221', 'a', '5397']

SOLUTION: 72217969

PROBLEM: 1, 2, ['2897', 'F']

SOLUTION:
F2897