Regular expression to Allow starting letters and then numbers or letters

Question

I need regular Expression which should start with letters only and later it can contain numbers or letters.But starting should contain letters only. I have used ``` ^[a-zA-Z]*[a-zA-Z0-9]+$ ``` But it is not working. Can anyone please help me out?

Accepted Answer

You used the wrong cardinality. Use `+` (at least one) instead of `*` (0 or more), as shown below:

```
^[a-zA-Z]+[a-zA-Z0-9]*$
```

Regular expression to Allow starting letters and then numbers or letters

Solution

Problem