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: 5, 23, ['s', 'i', '7369', '491', '5373', '6325', '9249', '7479', '7917', 'A', 'x', '4733', 'P', 'p', '315', '5557', 'm', 'W', '8883', '2559', '6233', 'l', 'Z', '8435', 'X', 'X']

SOLUTION: Zl623325598883Wm5557315pP4733xA79177479924963255373

PROBLEM: 12, 18, ['W', '9509', '3541', 'T', 't', 'Y', 'x', '9667', 'V', '7605', '7727', 'x', 'x', 'W', '3657', '2591', '9599', 'I', 'd', '6679', '1373', 'e', '6173', '8861', 'n', 'L', '5093', 's', '453']

SOLUTION: I959925913657Wxx

PROBLEM: 1, 7, ['m', '305', '3877', '4261', '8003', 'Q', '185', 'f', 'w', 'E', 'l', '6043']

SOLUTION:
185Q800342613877305m