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: 8, 12, ['m', 'v', '3139', '653', '9019', 'u', 'Y', 'a', 'e', '2067', '767', '5151']

SOLUTION: ae20677675151

PROBLEM: 1, 7, ['D', 'f', '547', 'r', 'W', '8611', '869', '6649', 'V', '6969', '2731', 'q', '3687', 'q']

SOLUTION: Df547rW8611869

PROBLEM: 1, 15, ['o', 'n', '2129', 'c', '8377', 'T', '5099', '2323', 'a', 'f', 'W', '6123', 'X', '9197', '3509', '4055', 'd']

SOLUTION:
on2129c8377T50992323afW6123X91973509