Java Variables - Part 2 - String & int - #w3schools #java #programming

This video is an introduction to Java Variables. Part 2 of 8.

Part of a series of video tutorials to learn Java for beginners!

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[piyushjain]

Yes, I can understand the content of the questions based on the images you provided. Here are the two coding questions:

### 1. **Error Log Extraction**
You are required to develop a function that processes a stream of log data from AWS CloudWatch, represented as a 2D array of strings called logs. Each inner list contains the following log information: the year, date, time, status, and message.

The task is to return all logs with `ERROR` or `CRITICAL` status, sorted by their time of arrival. If two logs arrive at the same time, return them in the order that appears first in logs.

- The log date is in `DD-MM-YYYY` format, and the log time is in `HH:MM` format.

**Example:**
```python
logs = [["01-01-2023", "14:00", "ERROR", "failed"],
["01-01-2023", "15:00", "INFO", "established"],
["01-01-2023", "01:30", "ERROR", "failed"]]

# Expected Output:
# [[1, "01-01-2023", "01:30", "ERROR", "failed"],
# [0, "01-01-2023", "14:00", "ERROR", "failed"]]
```

### 2. **Application Analytics**
You are tasked with designing an application analytics system that keeps track of actions performed in the application. The system uses a given integer `K`. When the number of registered actions becomes equal to `K`, the system sends these actions to an `Analytics Store`.

- The actions are represented using an enum called `ActionsEnum`.
- Implement the following methods:
- `registerAction(ActionEnum action)`: Registers an action.
- Returns the total number of actions done.
- Returns the most frequently used actions sorted lexicographically by enum string values.
- Returns the number of actions that have been registered but not yet sent to the analytics store.

Let me know if you need further clarifications or help with the solutions!