Vector left Shifting is the operation of shifting the elements of a single dimensional array to the left by one position keeping the last (boundary) element unchanged. Write a shift vector kernel and the host stub function. The code must be written and run on a proper environment setting, then you need to submit it to your TA. Assume that the vector length is 2000, each thread calculates one output element, and the thread block size is 512 threads. PLEASE USE CUDA C LANGUAGE AND PROVIDE WITH A SCREEN SHOT OUTPUT ASAP :(