Aug 19, 2026 · 4 min · 6 segments
THEORETICAL RECAP A factorial of a non-negative integer n (written n!) is the product of all positive integers from 1 up to n, with the special rule that 0! equals 1. In programming, the factorial is…
Theoretical recap.
A factorial of a non-negative integer n, written n, is the product of all positive integers from one up to n, with a special rule that zero equals one.
In programming, the factorial is the classic example used to compare two approaches: iteration, using a loop, and recursion, a function that calls itself.
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Theoretical recap.
A factorial of a non-negative integer n, written n, is the product of all positive integers from one up to n, with a special rule that zero equals one.
In programming, the factorial is the classic example used to compare two approaches: iteration, using a loop, and recursion, a function that calls itself.