[Hacker Rank_Linux Shell]문제 풀이#Bash_1

Linux Shell > Bash > Looping and Skipping

Looping and Skipping | HackerRank

 

for i in {1..99..2}
do
    echo $i
done

---

Linux Shell > Bash > A Personalized Echo 

A Personalized Echo | HackerRank

read name
echo "Welcome $name"

---

Linux Shell > Bash > Looping with Numbers

Looping with Numbers | HackerRank

for i in {1..50}
do
    echo $i
done

---

Linux Shell > Bash > The World of Numbers

The World of Numbers | HackerRank

read X
read Y

echo $((X + Y))
echo $((X - Y))
echo $((X * Y))
echo $((X / Y))

---

Linux Shell > Bash > Comparing Numbers

Comparing Numbers | HackerRank

read X
read Y
if ((X < Y)); then
    echo X is less than Y;
elif ((X > Y)); then
    echo X is greater than Y;
else
    echo X is equal to Y;
fi

---

Linux Shell > Bash > Getting started with conditionals

Getting started with conditionals | HackerRank

read char

if [[ $char == "Y" || $char == "y" ]]; then
    echo "YES";
else
    echo "NO";
fi

---

Linux Shell > Bash > More on Conditionals

More on Conditionals | HackerRank

read X
read Y
read Z

if [[ $X == $Y && $Z == $Y ]]
then
    echo "EQUILATERAL";
elif [[ $X != $Y && $Z != $Y && $X != $Z ]]
then
    echo "SCALENE";
else
    echo "ISOSCELES";
fi

---

---

Linux Shell > Bash > Arithmetic Operations

Arithmetic Operations | HackerRank

# echo "scale = 3; $result" | bc -l 을 사용했을 때
# round가 적용되지 않아 다른 코드를 참고한 결과
# 아래와 같이 printf를 함께 사용한다
# scale 디폴트가 0이므로 우선 4로 지정한 후
# %.3f를 이용해 3자리로 맞춘다

read result
 
printf "%.3f" $(echo "scale = 4; $result" | bc -l)

---