# Function Task Examples ### Common Language Examples | Example | Description | | :-------------------------------------------------------------------------------------------------------------------------------------------: | :------------------------------------------------------------------------------: | | [**Fibonacci**](https://devs.truebit.io/developing-truebit-tasks/how-to-create-function-tasks/function-task-examples/fibonacci) | A simple function to calculate the Fibonacci sequence based on an input integer. | | [**Reverse Alphabet**](https://devs.truebit.io/developing-truebit-tasks/how-to-create-function-tasks/function-task-examples/reverse-alphabet) | A simple function to reverse characters in an input string. | ### Js Examples
ExampleDescription
Sha256 using bun.jsA simple function to encrypt using bun.js.
Sha256 using DenoA simple function to encrypt using Deno.
ECDSA Signature VerificationA simple signature verification using the ECDSA algorithm.
### Python Examples
ExampleDescription
​NumPyA simple example showing how to interact with the library and process an external file.