Contents

declare -A trans
trans[G]='C'
trans[C]='G'
trans[A]='U'
trans[T]='A'

for i in $(seq 1 ${#1}); do
  nt="${1:$i-1:1}"
  comp_nt="${trans[$nt]}"

  if [ -z "$comp_nt" ]; then
    echo 'Invalid nucleotide detected.'
    exit 1
  fi

  complement="$complement$comp_nt"
done

echo $complement

Version data entries

300 entries across 300 versions & 1 rubygems

Version	Path
trackler-2.2.1.82	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.81	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.80	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.79	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.78	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.77	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.76	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.75	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.74	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.73	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.72	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.71	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.70	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.69	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.68	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.67	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.66	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.65	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.64	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.63	tracks/bash/exercises/rna-transcription/example.sh