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: 15, 18, ['2157', 'P', 'n', '5155', 'L', 'P', 's', '5401', 'c', 'T', 'h', '3801', 'S', 'c', 'V', 'P', 'l', 'G', 'j', '839', '6383', 'C']

SOLUTION: GlPV

PROBLEM: 7, 12, ['R', '3623', 'M', '5183', '1901', '7279', 'w', 'L', '2779', '6019', 'Q', '1393', '1989', 'h', 'Q', 'I', '915', '4425']

SOLUTION: 1393Q60192779Lw

PROBLEM: 4, 13, ['x', '3495', '8859', 'g', 'm', 'Y', '1765', '6873', '1145', 'N', 'W', 'Z', 'O', 'a', 'Q', '3463', 'M', 'X', 'F', '1795', 'T', '1637', 'S', '9833']

SOLUTION:
OZWN114568731765Ymg