Contents

#!/usr/bin/env bash

is_armstrong() {
  sum=0
  number=$1
  power=${#number}

  index=1
  while [ $index -le ${#number} ]; do
      digit=$(echo ${number} | cut -c${index}-${index})
      sum=$(expr $sum + $(($digit**$power)))

      index=$(expr $index + 1)
  done

  if [ $sum -eq $number ]; then
    echo "true"
    exit 0
  else
    echo "false"
    exit 1
  fi
}

"$@"

Version data entries

93 entries across 93 versions & 1 rubygems

Version	Path
trackler-2.2.1.139	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.138	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.137	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.136	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.135	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.134	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.133	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.132	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.131	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.130	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.129	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.128	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.127	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.126	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.125	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.124	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.123	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.122	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.121	tracks/bash/exercises/armstrong-numbers/example.sh
trackler-2.2.1.120	tracks/bash/exercises/armstrong-numbers/example.sh