5월 21일 알고리즘 연습문제

1. 

https://school.programmers.co.kr/learn/courses/30/lessons/181892

 

2. 

https://school.programmers.co.kr/learn/courses/30/lessons/181891

 

3. 

https://school.programmers.co.kr/learn/courses/30/lessons/181890

 

4. 

https://school.programmers.co.kr/learn/courses/30/lessons/181889

 

5. 
https://school.programmers.co.kr/learn/courses/30/lessons/181888

 

6. 

https://school.programmers.co.kr/learn/courses/30/lessons/181887

 

7. 
https://school.programmers.co.kr/learn/courses/30/lessons/181886

const solution = names => names.filter((_, i) => !(i % 5))

// 5로 나눈 나머지가 0인경우만 return

i % 5  === 0 를 !(i % 5) 이렇게 사용할 수 있다. 

8. https://school.programmers.co.kr/learn/courses/30/lessons/181884