Java program exercise: Guess letters, java program guess letters

Java program exercise: Guess letters, java program guess letters

Guess letters
Program = Data Structure + Algorithm

First:
Define Data Structure
1. Find a noun
Input: Input variable
Output: Output variable
Implicit: Find hidden variables, such as strings.

Second:
Define algorithms and Process Programs

Finally:
Implement it in sequence

Note:
1. When the basic data type is passed as a parameter, a new variable is copied, so the parameters in the method do not affect the variables outside the method.
2. When an array is passed as a parameter, it directly acts on the original array (array data type, which is to use new to open up space)