Loop Logic Visualizer

> Loops are hard to visualize in your head. Watch them run step-by-step here.

Select Pattern

Python

for i in range(5):

Iteration

Variable

Action

i = 0

Iteration 1 (i=0)

i = 1

Iteration 2 (i=1)

i = 2

Iteration 3 (i=2)

i = 3

Iteration 4 (i=3)

i = 4

Iteration 5 (i=4)

Ready to start?

Click "Visualize" to run the loop.

How to use Loop Logic Visualizer?

Configure Loop

Choose For Loop or While Loop and set start/end values.

Step Through

Use the arrow keys or buttons to move step-by-step.

Visualize

Watch how variables (i, count) change in real-time.

Why use this tool?

Mental Model: 'See' the loop logic instead of just reading code.

Debug Skills: Learn how execution flow jumps around.

Beginner Friendly: Perfect for those stuck on iteration.

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STUCK ON THIS CONCEPT?

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About This Tool

This Loop Logic Visualizer is part of the extensive developer toolkit provided by Hello World Classes. Designed for students, beginners, and professional developers, our tools aim to simplify complex coding tasks. Whether you are debugging Python code, converting HTML to PDF, or just testing your typing speed, we have a free tool for you.

Our mission is to make coding accessible. By combining interactive tools with our comprehensivecoding courses, we provide a holistic learning environment.

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