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: 3, 8, ['B', 'w', '4119', '8783', 'B', '3767', '6269', '8115']

SOLUTION: 811562693767B87834119

PROBLEM: 4, 6, ['U', '5099', '1125', 'U', '1693', '7717', 'P', '7679', 'E', '7747', 'D', 'Z', 'E', '4473']

SOLUTION: 77171693U

PROBLEM: 3, 5, ['7567', 'G', 'J', '9725', '681', 'S', 'K', '5065']

SOLUTION:
6819725J