Strong Number Check in Java: Explanation & Practice

Check if a number is a strong number

Problem summary

A strong number equals the sum of factorials of its digits (e.g., 145 = 1! + 4! + 5!). Check if the given number is strong.

Starter code

public class Main {
    public static void main(String[] args) {
        int number = 145; // Test case 1
        
        // Check if strong number
        // Print: Is strong: <true/false>
    }
}

Expected output and test cases

145 = 1!+4!+5! = 145
```
Is strong: true
```
2 = 2! = 2
```
Is strong: true
```
123 is not strong
```
Is strong: false
```

Hints

Extract each digit
Calculate factorial of each digit
Sum factorials and compare with original

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