Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.
Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
Download Free Tool
Vibes don’t ship, Retool does
Start from a prompt and build production-ready apps on your data—with security, permissions, and compliance built in.
Vibe coding tools create cool demos, but Retool helps you build software your company can actually use. Generate internal apps that connect directly to your data—deployed in your cloud with enterprise security from day one. Build dashboards, admin panels, and workflows with granular permissions already in place. Stop prototyping and ship on a platform that actually passes security review.
This application can be used to shuffle sequences in FASTA format.
...The random permutation is obtained using a simple variation of the Fisher-Yates alghorithm implemented by Durstenfeld (https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle) ( Knuth DE. The art of computer programming: seminumerical algorithms. 3rd ed. Boston: Addison-Wesley; 1997). The input file contains one or more sequences in FASTA format. The number of shufflings (n) for each sequence can be set; by default n is 100. The output file contains n shuffled copies in FASTA format for each input sequence.
For example (n=3):
Input file:
>a
ACGGT
>b
GCCCATTC
Output file:
>a
TCGAG
>a
CGAGT
>a
TGCGA
>b
CACTCCGT
>b
CCCGTATC
>b
CCTTCAGC