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: 10, 20, ['9695', 'I', '5457', 'M', 'V', '7993', 'B', 'b', 'u', 'H', '7805', '3431', '6839', '3687', '8261', 'U', 'a', 'W', '9437', 'q', 'l']

SOLUTION: q9437WaU82613687683934317805H

PROBLEM: 2, 7, ['t', 'F', '1187', '7655', '9523', 'q', 'c']

SOLUTION: cq952376551187F

PROBLEM: 2, 2, ['8359', '6479', 'S', 'I', '3919', '6427']

SOLUTION:
6479