Please focus on the practice of loop in this assignment and DO NOT use any advance concept such as method, array, or built-in support of String/objects (Note that using String variable is ok for file processing). The learning outcome is to develop the code RIGHT with counter- and event-control loops, accumulation loop (i.e., applying functional process inside loop body), and nested loop (i.e., using inner loop inside the outer loop body).

PrintGrid.java: Write a program accepts two integers rows and cols. The output is a comma-separated grid of numbers where rows represents the number of rows of the grid and cols represents the number of columns. The numbers count up from 1 to (rows x cols). The output will be displayed in column-major order, meaning that the numbers shown increase sequentially down each column and wrap to the top of the next column to the right once the bottom of the current column is reached. You may assume that both inputs are greater than 0.