Idea common code templates

【1】 Templates 1：main Method ：main perhaps psvm

【2】 Templates 2：sout perhaps .sout

Some variants ：

soutp： Formal parameters of the printing method

soutm： The name of the printing method

soutv： Print variables

【3】 Templates 3： loop

Ordinary for loop ：fori( positive ) perhaps .fori( positive ) .forr( reverse )

Positive strength for loop ：iter perhaps .for( Can be used for array traversal , Traversal of the set )

【4】 Templates 4： conditional

ifn perhaps .null： Judge whether it is null （if null）

inn perhaps .nn： Judgment does not equal null （if not null）

【5】 Templates 5： Property modifier

prsf：private static final

psf：public static final