add examples to educational website

we need to add examples to our educational platform,
the examples can be examples of anything you want, mathematics, physics, chemistry, statistics, programming,...etc
levels of examples can be easy, medium, or hard.

this is an examples of what you can add:
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• Examples of binary search
• Examples of bubble sort
• Examples of usecase diagram
• Examples of erd diagram
• Examples of analysis class diagram
• Examples of if else in java
• Examples of switch case in java
• Examples of for loop in java
• Examples of while loop in java
• Examples of do while loop in java
• Examples of arrays in java
• Examples of object oriented programming in java
• Examples of classes in java
• Examples of methods in java
• Examples of inheritance in java
• Examples of polymorphism in java
• Examples of data encapsulation in java
• Examples of constructors in java
• Examples of random library in java

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if you see you are suitable for this task please give us your offer for adding 800 examples, and provide us with the categories of your examples