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: 6, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']

SOLUTION: 1195d

PROBLEM: 3, 5, ['2849', 'J', 'L', '2347', '7219', 'a', 'Q', 'U', '6865', 'O']

SOLUTION: 91277432L

PROBLEM: 13, 22, ['705', '5315', '5881', 'I', 'I', '9155', 'h', '7565', '2063', 's', '6463', 'J', '5097', '9375', 'u', '6301', '9253', 'P', 'x', '9263', '7883', '1119', 'Q', 'w', '5585', '4319', '4361', '9671']

SOLUTION:
911138873629xP35291036u57397905

