Introduction - If you have any usage issues, please Google them yourself
1, create a complex class complex mathematical operations in the plural 2 Account class to create a bank account, deposit (balance) deposit (deposit) take (withdraw) and query (getbalance) function programming defined a interface, three numbers for the minimum and maximum values, and stored procedures mymaths package 4. modify 5.7.2 Case 1 part of the design: (1) design and implementation of a subclass of Clipher class, it encryption rules as follows: for each letter in the alphabet, the letter of the corresponding positions in the anti-alphabet instead, such as a Z instead b with y instead. Render ② to modify Transpose.encode () by using a rotary rather than inverted. That is to say, by the rotation of a character, such as " hello" rotation " ohell"