Given a graph that contains N nodes and also contains some directed edges (tail -> head) that connect some nodes to others. Then, using a NxN 2D-array, we can represent the graph in the following way: ...

In 2D arrays, we have square brackets in the declaration but in the 1D array we use one square bracket to declare it (int[] ar=new int[]) and in 2D matrix declaration first bracket is used to specify ...