TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
PROBLEM: 1, 4, ['t', '6037', 'I', '2769', 'C']

SOLUTION: 9672I7306t

PROBLEM: 6, 16, ['T', '7203', 'J', 'O', 'h', 'm', 'q', '3985', 'H', 'w', '2055', '9161', 'T', '8415', '95', 'c']

SOLUTION: c595148T16195502wH5893qm

PROBLEM: 5, 21, ['E', 'A', '7669', '5393', '4043', 'o', '2489', 'l', '7953', 'R', 'e', 'l', 'b', 'G', '8823', '3001', 'x', 'q', 'C', '3773', 'l', 'E', 'i', '2725', 'F', 'O', '9657', 'j']

SOLUTION:
l3773Cqx10033288GbleR3597l9842o3404

