File:Enumeration of text file by size and lexicographic order, valid C programs highlighted.gif
Summary
| Description |
English: Shows excerpts from an enumeration of the set T of all text files buildable from ASCII characters in range 0x20...0x7e (i.e. ' '...'~'), ordered by file size (i.e. string length, as no control charcters like newline are admitted), and strings of same length ordered lexicographically. The existence of such an enumeration ensures that T is countable; hence its proper subset TC of all C programs (without any preprocessor code, but with otherwise sloppiest possible syntax requirements) is countable, too. Members of TC are shown in green, other members of T in red. The last line supposedly shows the shortest C program printing "Hello World". The rank number of a string s is about two times as long as s itself, since 95 different characters are possible in each column. |
| Date | |
| Source | Own work |
| Author | Jochen Burghardt |
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