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: 3, 5, ['G', 'r', '3969', '7925', 'M', '7559', 'j', '2069', 'T', '7739', '3101', '4965', 'y', '9787', 'L', 'p', 'w', '4351', '9759', '4195']

SOLUTION: 39697925M

PROBLEM: 3, 3, ['1635', '4583', '2497']

SOLUTION: 2497

PROBLEM: 2, 3, ['S', 'C', 's', '5909', 'z', 'j']

SOLUTION:
Cs