Help needed with understanding a problem

Question

Given int[][] myVals ={{2, 4, 6, 8}, {20, 40, 60, 80}};

Using the above 2d vector, what is the value of myVals[1][2]?

The answer is 60. Can someone explain to me why?

Thanks

Answer 1

int[][] myVals ={{2, 4, 6, 8}, {20, 40, 60, 80}};;

A 2D integer array named myVals is declared and initialized. "int[][] myVals " names the array myVals, declares it to be of type "int", and says it will be two dimensions by including "[][]".

Now, the two rows of data are initialized by "={{2, 4, 6, 8}, {20, 40, 60, 80}}", Notice that the elements of each row are separated by commas, then the row of elements is placed in curly braces ( "{" and "}" ).

See the table above.

References are of the form: Array [rownum][colnum].

So, myVals[1][2] refers to the second row (that is, number 1) and the third position (that is, number 2). Be careful to start your numbering with 0 (that is -- 0,1,2,3).

MyVals[1][2] = 60 (see the picture}