Explain creating a pyramid in Java

Question

I am in a beginner java programming class and currently reviewing loops. If there is one thing I just do not understand, it\'s pyramids. I have researched the book exercis

Answer 1

There are 7 rows in the pyramid, so the first for loop is looping over the rows, the second for loop is printing a bunch of spaces so that the triangle doesnt appear as:

1
2 1 2
3 2 1 2 3

The third for loop (with k), has a conditional operator which works like this:

boolean-expression ? result-if-true : result-if-false

So it either adds the number k to the string, or adds a space and then the number k to the string.

Fourth loop does a similar thing.