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  1. #!/bin/bash
  2.  
  3. nl -v0 -ba|sed -r ':;s/(\S+\s+)(\S+) /\1\2\n\1 /;t;s/^\s*\S+\s*$/& &/'|tsort|tac
Success #stdin #stdout 0s 5076KB
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https://ideone.com/4014DN
language:
Bash (bash 5.0.3)
created:
8 years ago
visibility:
public

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