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: 6, 15, ['7969', 'z', '7061', 'J', 'T', '7917', '7225', '7907', '8333', 'U', 'w', 'Y', '4729', '2461', 'X', 'k']

SOLUTION: X24614729YwU8333790772257917

PROBLEM: 3, 8, ['A', '4235', 'w', 'y', '4877', 'M', 'Z', '4403', '969', '4749', 'n', 'x']

SOLUTION: 4403ZM4877yw

PROBLEM: 11, 18, ['8427', 'J', 'O', 'Q', 'F', 'U', 'D', 'O', '6389', '3211', 'g', 'y', 'H', '1067', 'j', 'G', '6657', 'T', '7569', '4205', 'B']

SOLUTION:
T6657Gj1067Hyg