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, 18, ['u', '3123', 'g', 'r', 'M', '559', 'F', 'F', '3229', '3207', 'w', 'X', 'U', 'j', 'f', 'p', '7623', '6121', '2279', 'v']

SOLUTION: 61217623pfjUXw32073229FF559M

PROBLEM: 3, 9, ['3563', '217', 'y', 'N', '999', 'd', 'x', 'W', 'E', '695', '1837', '2221', '7513', '1613', 'Q']

SOLUTION: EWxd999Ny

PROBLEM: 2, 4, ['5669', '5877', '5861', '4263', '3317', '7057', '315']

SOLUTION:
426358615877