Skeleton code for Android Calculator, written in Java.

In this test, you are required to create a calculator app on Android! 🎉 📱

• Perform basic calculation ➕ ➖ ✖️ ➗

  • Addition, Subtraction, Multiplication, Division
  • Between two input real numbers (both integers and floats) 🔢

• Clear input and result (by the C button)

• Display current user input

  • Simple equation with actions involving two numbers are already sufficient
  • E.g.: 135 + 252.5

• Display result of equation when user hit = button

• Error checking for user inputs 💻

  • Do nothing when = is hit if error is present

• You cannot use any external library 👽 🚫

  • E.g. Expr4J

• Copying other's work or source code is strictly prohibited 😠 (Except for the skeleton codes we provide)

  • Once found, the related intervieww will be immediately disqualified
  • We take integrity seriously here in USThing, so please don't cheat 😉
  • Using your own work is fine, but you need to provide the proof of ownership

• We have prepare a few skeleton project and codes for you, you are welcome to:

  • Clone the existing skeleton project on GitHub (Environment-ready)

  • Download the individual files by downloading the zip on the GitHub Repositories and grab what you need

    • Java Calculator Skeleton Project
    • Kotlin Calculator Skeleton Project

  • Write from scratch! 👻

• Grab user input with numpad click
• Implement calculation logic
• Check user input validity when = button is clicked
• Display Anwser
• Clear input and result when C button is clicked

Feel free to ask our members on the scene if you have any questions 👍

Happy Coding! 🎊

Used intended for USThing coding challenge only.