Regular Calculator + RPN Visualizer

RPN Output

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Main Stack (top → bottom)

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Evaluation Steps

How I built this

• I used a normal expression parser flow: tokenize infix input, add implicit multiplication, convert infix to RPN, then evaluate RPN.
• The conversion uses the Shunting Yard algorithm, so order of operations and parentheses work correctly.
• Every RPN token updates an evaluation stack, and each stack snapshot is shown in the “Evaluation Steps” section.
• Final results are pushed into a persistent “Main Stack” so you can track multiple calculations.

What it uses

• HTML: calculator structure (input, keypad, output panels)
• CSS: card layout, responsive grid, and polished visual styling
• Vanilla JavaScript: parsing, RPN conversion, stack evaluation, and UI updates
• No external libraries required, so it runs directly on your deployed static Jekyll site

Extra notes

• You can still keep your Java version in java/RpnCalculator.java as the console implementation.
• This page is the web version designed to run on deployment.