@cassidoo's interview question from August 13, 2023

faultyKeeb.sh

#!/usr/bin/env bash
set -eu -o pipefail

isVowel(){
	CHAR=${1:0:1}
	if [[ "$CHAR" == *[AaEeIiOoUu]* ]]; then
		echo 0
	else
		echo 1
	fi
}

# check input
ARGC="$#" 
if [[ "$ARGC" -lt 1 ]]; then
	echo "Please enter a string"
	exit 1
fi
# grab entire arg group as a single string
STR="${*}"
OUT=""

# iterate over string
for (( i=0; i<${#STR}; i++ )); do
	CHAR="${STR:$i:1}"
	if [ $( isVowel "${CHAR}" ) -eq 0 ]; then
		if (( i != 0 )); then
			# vowel is not first char
			# reverse string up to position i
			OUT="$( rev <<< "${OUT}")"
		fi
	else
		# char is not vowel
		# concat char onto output string
		OUT="${OUT}${STR:$i:1}"
	fi
done

echo "${OUT}"

MONTASIO:cassidoo andrewrich$ ./faultyKeeb.sh string
rtsng
MONTASIO:cassidoo andrewrich$ ./faultyKeeb.sh hello world!
w hllrld!
MONTASIO:cassidoo andrewrich$ ./faultyKeeb.sh cassidoo
sscd