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, 8, ['6921', '3459', '5521', '6215', 'r', '8397', 'R', '8499', '6683', '6595', '8315', '965', '3055']

SOLUTION: R8499

PROBLEM: 1, 2, ['6729', 'z']

SOLUTION: 6729z

PROBLEM: 4, 4, ['Y', 'f', '3041', 'O', '9579', '1187']

SOLUTION:
O