Learn THUE with Real Code Examples

Updated Nov 26, 2025

Introduction & Fundamentals Setup & Configuration Architecture & Deep Internals Performance & Security Development Workflow Learning & Career Growth Business & Strategy Examples

Code Sample Descriptions

Hello World in Thue

::=

::=Hello World!

::=::

A simple Thue program that outputs 'Hello World!'. The rules transform an initial start symbol into the target string.

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Simple Increment

N::=0
N::=N1
N::=N2
N::=N3
N::=N4
N::=N5
N::=N6
N::=N7
N::=N8
N::=N9

Increment a number represented as a string of digits.

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Simple Decrement

D1::=0
D2::=1
D3::=2
D4::=3
D5::=4
D6::=5
D7::=6
D8::=7
D9::=8
D0::=9

Decrement a number represented as a string of digits.

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Print Numbers 1 to 3

S::=1A
A::=2B
B::=3
C::=::
S

Prints numbers 1, 2, 3 sequentially using Thue rules.

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Swap Two Symbols

S::=AB
AB::=BA
BA::=AB

Swaps two symbols A and B in the string.

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Simple Copy Rule

X::=Y
Y::=X

Copies symbol X to Y using Thue rules.

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Conditional Output Example

S::=A?YES:NO
A::=::
S

Outputs 'YES' if symbol A exists, 'NO' otherwise.

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Palindrome Check

S::=ABA
ABA::=PALINDROME
B::=::
S

Checks if a string is a palindrome using Thue transformations.

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Reverse String

S::=ABC
ABC::=CBA
CBA::=ABC

Reverses the string 'ABC' to 'CBA'.

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Factorial Concept

F::=1
F::=F*2
F::=F*3
F::=F*4
F::=RESULT
RESULT::=::
F

A simple conceptual Thue program to illustrate factorial transformation.

Let’s Try →

Learn THUE with Real Code Examples

Updated Nov 26, 2025

Introduction & Fundamentals Setup & Configuration Architecture & Deep Internals Performance & Security Development Workflow Learning & Career Growth Business & Strategy Examples

Code Sample Descriptions

Hello World in Thue

::=

::=Hello World!

::=::

A simple Thue program that outputs 'Hello World!'. The rules transform an initial start symbol into the target string.

Let’s Try →

Simple Increment

N::=0
N::=N1
N::=N2
N::=N3
N::=N4
N::=N5
N::=N6
N::=N7
N::=N8
N::=N9

Increment a number represented as a string of digits.

Let’s Try →

Simple Decrement

D1::=0
D2::=1
D3::=2
D4::=3
D5::=4
D6::=5
D7::=6
D8::=7
D9::=8
D0::=9

Decrement a number represented as a string of digits.

Let’s Try →

Print Numbers 1 to 3

S::=1A
A::=2B
B::=3
C::=::
S

Prints numbers 1, 2, 3 sequentially using Thue rules.

Let’s Try →

Swap Two Symbols

S::=AB
AB::=BA
BA::=AB

Swaps two symbols A and B in the string.

Let’s Try →

Simple Copy Rule

X::=Y
Y::=X

Copies symbol X to Y using Thue rules.

Let’s Try →

Conditional Output Example

S::=A?YES:NO
A::=::
S

Outputs 'YES' if symbol A exists, 'NO' otherwise.

Let’s Try →

Palindrome Check

S::=ABA
ABA::=PALINDROME
B::=::
S

Checks if a string is a palindrome using Thue transformations.

Let’s Try →

Reverse String

S::=ABC
ABC::=CBA
CBA::=ABC

Reverses the string 'ABC' to 'CBA'.

Let’s Try →

Factorial Concept

F::=1
F::=F*2
F::=F*3
F::=F*4
F::=RESULT
RESULT::=::
F

A simple conceptual Thue program to illustrate factorial transformation.

Let’s Try →