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: 3, 7, ['h', '7973', 'y', '8987', 'W', 'I', '7665']

SOLUTION: 7665IW8987y

PROBLEM: 3, 5, ['M', 's', 'w', '1419', 'S', 'v', 'Q']

SOLUTION: S1419w

PROBLEM: 6, 8, ['v', '6601', '1885', 'f', 'F', '7007', 'z', '6621']

SOLUTION:
6621z7007