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 concatenate all elements of A from the ith element to the jth element, and print 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.
PROBLEM: 2, 10, ['z', '277', 'x', '1799', '5877', '9249', 'x', '6297', 'r', '9315', 'z']

SOLUTION: 277x179958779249x6297r9315

PROBLEM: 15, 20, ['E', 'V', '2589', 'r', '1501', '9699', 'K', 'S', '3971', 'k', '5743', '1525', 'c', 'O', 'X', 'i', '1863', '4295', 'M', '6309', '4975', '1663']

SOLUTION: Xi18634295M6309

PROBLEM: 11, 11, ['K', 'N', 'K', '5555', '1553', 'h', '4959', '7859', '3477', '2933', 'b', '789', 'B', '8203']

SOLUTION:
b