You're writing a Bash script that reads a list of names from a file and generates a random name from the list. The generated name should not be a duplicate of the previous one. Which code snippet correctly implements this behavior using a while loop?0.5 Marksnames=("Alice" "Bob" "Charlie" "David")prev_name=""while true; doname=${names[$RANDOM % ${#names[@]}]}if [ "$name" != "$prev_name" ]; thenecho "Generated name: $name"prev_name="$name"breakfidonenames=("Alice" "Bob" "Charlie" "David")prev_name=""while true; doname=${names[$RANDOM % ${#names[@]}]}if [ "$name" == "$prev_name" ]; thencontinueelseecho "Generated name: $name"prev_name="$name"breakfidonenames=("Alice" "Bob" "Charlie" "David")prev_name=""while true; doname=${names[$RANDOM % ${#names[@]}]}if [ "$name" == "$prev_name" ]; thenecho "Generated name: $name"prev_name="$name"breakfidonenames=("Alice" "Bob" "Charlie" "David")prev_name=""while true; doname=${names[$RANDOM % ${#names[@]}]}if [[ "$name" == "$prev_name" ]]; thencontinueelseecho "Generated name: $name"prev_name="$name"breakfidone
Question
You're writing a Bash script that reads a list of names from a file and generates a random name from the list. The generated name should not be a duplicate of the previous one. Which code snippet correctly implements this behavior using a while loop?0.5 Marksnames=("Alice" "Bob" "Charlie" "David")prev_name=""while true; doname={names[RANDOM % {#names[@]}]}if [ "name" != "name"prev_name="{names[{#names[@]}]}if [ "prev_name" ]; thencontinueelseecho "Generated name: name"breakfidonenames=("Alice" "Bob" "Charlie" "David")prev_name=""while true; doname={names[RANDOM % {#names[@]}]}if [ "name" == "name"prev_name="{names[{#names[@]}]}if [[ "prev_name" ]]; thencontinueelseecho "Generated name: name"breakfidone
Solution
The correct code snippet is:
names=("Alice" "Bob" "Charlie" "David")
prev_name=""
while true; do
name=${names[$RANDOM % ${#names[@]}]}
if [[ "$name" != "$prev_name" ]]; then
echo "Generated name: $name"
prev_name="$name"
break
fi
done
This script first defines an array of names and an empty string for the previous name. Then it enters a while loop that continues indefinitely. In each iteration of the loop, it selects a random name from the array. If this name is not the same as the previous name, it prints the name, sets the previous name to the current name, and breaks the loop. If the name is the same as the previous name, it simply continues to the next iteration of the loop.
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