Talk about the understanding of nested for loops

Talk about the understanding of nested for loops

for nesting, let's talk about how A for loop is used.

The purpose of this is to use a for loop to output a multiplication table, which is my step-by-step understanding.

< Span style= "FONT-SIZE:14PT;" >    I.   syntax:
            for (expression 1; Expression 2; expression 3) {
                java statement;
            }
        
          Expression 1 is an initialization expression that executes first and executes only once.
         Expression 2 must be an expression of type Boolean.
        for loop starts execution, executes expression 1 first, and executes only once.
         to determine the result of expression 2, and if true, executes the Java statement.
         re-executes expression 3, based on the section of expression three, and then the result of expression 2 until expression 2
          The result is false, the For loop ends.

Two. To cite an example,

This results in the following output:

you will find it to be a line style.

So I'm nesting a for loop inside this for loop, and the code

To show the results of the output:

There is no discovery, nested A for inside, will be from a line to become a face, it will be better for people to understand.

My goal is to make a multiplication table, the basic format has been, the following is the change in the data inside, the data is multiplied, so I changed the output style

(The multiplication formula in no 0 ah, the inside of the 0 to change to 1, sorry, silly, unexpectedly from 0 began to count multiplication formulas, the following change over AH)

The output is:

Basic is finished, so to modify the "J" value is OK, the code

After this modification, the appearance is:

Such a multiplication table is called out, in fact, for the nesting can be considered as a line into a polygon process.

It's easy to understand the principles. Continue next week.

Talk about the understanding of nested for loops