Check if number contains a digit Dry Run in PYTHON

Check if number contains a digit is an interactive PYTHON dry run visualizer from the Recursion programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Check if number contains a digit Program Code

def contains_digit(n, target):
    if n == 0:
        return False
    if n % 10 == target:
        return True
    return contains_digit(n // 10, target)

num, search = 739582, 5
if contains_digit(num, search):
    print(f"{num} contains digit {search}")
else:
    print(f"{num} does NOT contain {search}")

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