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: 2, 3, ['b', '5615', 'n', '6147', 'W']

SOLUTION: n5615

PROBLEM: 2, 15, ['447', 'F', '3469', 'B', 'q', '6273', 'G', '2973', '5109', 'A', 'O', '2849', '4469', '1995', 'm', '5735', '2011', '3255', '2653', 'p', '3383']

SOLUTION: m199544692849OA51092973G6273qB3469F

PROBLEM: 1, 1, ['2279', '5']

SOLUTION:
2279