02_2_findMagicNo.sh

#!/bin/bash


echo "Finding Magic Number"
echo "Think of a Number between 1 to 100"

maxRange=101
minRange=1
userNumber=0
userChoice=0

LESS_THAN=0
GREATER_THAN=1
EQUAL=2
while [ $userChoice -lt 2 ]
do
        userNumber=$(( (maxRange + minRange) / 2 ))

        echo "Is your number is $userNumber"
        echo "Enter 0 if number is less than your Number"
        echo "Enter 1 if number is greater than your Number"
        echo "Enter 2 if number is equal to your Number"

        read -p "Enter Choice (0-2) : " userChoice

        case $userChoice in
                $LESS_THAN)
                        maxRange=$userNumber
                        minRange=$minRange
                        ;;
                $GREATER_THAN)
                        maxRange=$maxRange
                        minRange=$userNumber
                        ;;
                $EQUAL)
                        echo "I GUESSED YOUR NUMBER"
                        ;;
        esac
done