[Programmers] 코딩 기초 트레이닝 #8

목차

배열 만들기 3

https://school.programmers.co.kr/learn/courses/30/lessons/181895

def solution(arr, intervals):
    answer = []

    for x in intervals:
        start, end = tuple(x)
        answer.extend(arr[start:end + 1])
    return answer

 

문자 리스트를 문자열로 변환하기

https://school.programmers.co.kr/learn/courses/30/lessons/181941

def solution(arr):
    return ''.join(arr)

문자열 돌리기

https://school.programmers.co.kr/learn/courses/30/lessons/181945

str = input()
for x in str:
    print(x)

 

주사위 게임2

https://school.programmers.co.kr/learn/courses/30/lessons/181930

def solution(a, b, c):
    hmap = {str(x): 0 for x in range(1, 7)}

    for n in [str(a), str(b), str(c)]:
        hmap[n] += 1

    count = 0
    for i, v in hmap.items():
        if v != 0:
            count += 1

    if count == 3:
        return a + b + c
    if count == 2:
        return (a + b + c) * (a ** 2 + b ** 2 + c ** 2)
    if count == 1:
        return (a + b + c) * (a ** 2 + b ** 2 + c ** 2) * (a ** 3 + b ** 3 + c ** 3)

 

9로 나눈 나머지

https://school.programmers.co.kr/learn/courses/30/lessons/181914

def solution(number):
    sum_number = sum([int(x) for x in ''.join(number)])
    return sum_number % 9

 

세로 읽기

https://school.programmers.co.kr/learn/courses/30/lessons/181904

def solution(my_string, m, c):
    arr = []

    prev = 0
    for step in range(0, len(my_string), m):
        if my_string[prev:step]:
            arr.append(my_string[prev:step])
        if step == len(my_string) - m:
            arr.append(my_string[step:len(my_string) + m])

        prev = step

    answer = ""
    for ar in arr:
        answer += ar[c - 1]
    return answer

 

수열과 구간 쿼리 1

https://school.programmers.co.kr/learn/courses/30/lessons/181883

def solution(arr, queries):

    for s, e in queries:
        for i in range(s, e+1):
            arr[i] += 1

    return arr

 

날짜 비교하기

https://school.programmers.co.kr/learn/courses/30/lessons/181838

def solution(date1, date2):
    y1, m1, d1 = date1
    y2, m2, d2 = date2

    x = datetime.datetime(y1, m1, d1)
    y = datetime.datetime(y2, m2, d2)

    if x  < y:
        return 1
    return 0

 

등차수열의 특정한 항만 더하기

https://school.programmers.co.kr/learn/courses/30/lessons/181931

def solution(a, d, included):
    answer = 0
    for idx, value in enumerate(included, start=1):
        if idx <= len(included) and value:        
            answer += a
        a = a + d
    return answer

 

글자 지우기

https://school.programmers.co.kr/learn/courses/30/lessons/181900

def solution(my_string, indices):
    answer = ""
    for i,v in enumerate(my_string):
        if i not in indices:
            answer += my_string[i]
    return answer