[프로그래머스] 09/09 (3)

[두 정수 사이의 합]

My answer

def solution(a, b):
    answer = 0
    for i in range(min(a,b),max(a,b)+1):
        answer+=i 
    return answer

Another answer

def solution(a, b):
    if a > b: 
        a, b = b, a
    return sum(range(a,b+1))

[나누어 떨어지는 숫자 배열]

My answer

def solution(arr, divisor):
    answer = []
    for i in range(len(arr)):
        if(arr[i]%divisor==0):
            answer.append(arr[i])
    if(len(answer)==0):
        answer=[-1]
    answer=sorted(answer)
    return answer

Another answer

def solution(arr, divisor): 
    # 빈리스트는 false로 받아들임 
    return sorted([n for n in arr if n%divisor == 0]) or [-1]

[같은 숫자는 싫어]

My answer-틀린 코드

def solution(arr):
    answer = []
    
    for i in range(len(arr)):
        for j in range(i+1,len(arr)):
            if(arr[i]==arr[j]):
                arr[j]=-1
            else:
                break
        if(arr[i]!=-1):
            answer.append(arr[i])
    
    return answer

Another answer

def solution(arr):
    answer=[arr[0]]
    for i in arr:
        if(answer[-1]!=i):
            answer.append(i)
    return answer