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: 16, 26, ['8349', 'C', 'J', '5251', '9801', 'x', '1201', 'j', '4439', '2971', '7189', '6205', '7339', '1201', '1653', '9789', '3987', 'a', '6427', '8277', 'R', 'a', 'K', 'I', 'K', 'y', '2625']

SOLUTION: yKIKaR82776427a39879789

PROBLEM: 12, 16, ['t', '4893', 'N', 'U', 'E', 'U', 'D', 's', '9541', '651', 'm', '2875', 'c', '6059', '4397', '1263']

SOLUTION: 126343976059c2875

PROBLEM: 11, 18, ['U', '6059', 'K', 's', 's', 'E', 'a', 'S', '3475', 'd', '2991', '1409', '3871', '3985', 'R', 'Y', 'Q', 't', 'h', 'U', 'z', '6513', 'W', 'X', 'f', 'V']

SOLUTION:
tQYR3985387114092991