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: 7, 7, ['Y', 't', '5729', 'R', 'v', '9237', '5331', 'r', 'J']

SOLUTION: 5331

PROBLEM: 10, 12, ['6999', '2223', '7751', 'b', '1379', 'e', 'v', '6749', 'k', '6697', '9', 'K', '5093']

SOLUTION: 66979K

PROBLEM: 2, 5, ['3127', 'B', 'P', '2679', 'b', 'K', 's', '6157', 'y', '9355']

SOLUTION:
BP2679b