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-2.2.1.2	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.1	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.1.0	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.6	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.5	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.4	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.3	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.2	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.1	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.2.0.0	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.55	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.54	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.53	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.52	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.51	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.50	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.49	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.48	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.47	tracks/bash/exercises/rna-transcription/example.sh
trackler-2.1.0.46	tracks/bash/exercises/rna-transcription/example.sh