langs a-z

Task/Guess-the-number-With-feedback/UNIX-Shell/guess-the-number-with-feedback.sh

@@ -0,0 +1,26 @@
+function guess {
+  [[ -n $BASH_VERSION ]] && shopt -s extglob
+  [[ -n $ZSH_VERSION ]] && set -o KSH_GLOB
+  local -i max=${1:-100}
+  local -i number=RANDOM%max+1
+  local -i guesses=0
+
+  local guess
+  while true; do
+    echo -n "Guess my number! (range 1 - $max): "
+    read guess
+    if [[ "$guess" != +([0-9]) ]] || (( guess < 1 || guess > max )); then
+      echo "Guess must be a number between 1 and $max."
+      continue
+    fi
+    let guesses+=1
+    if (( guess < number )); then
+      echo "Too low!"
+    elif (( guess == number )); then
+      echo "You got it in $guesses guesses!"
+      break
+    else
+      echo "Too high!"
+    fi
+  done
+}