샘플 코딩 시험 문제

 

from collections import Counter

def solution(v):
    ans = []
    v1 = sum(v,[])
    v_x = v1[0::2]
    v_y = v1[1::2]

    counts_x = Counter(v_x)
    for element, value in counts_x.items():
        if value%2 != 0:
            ans.append(element)

    counts_y = Counter(v_y)
    for element, value in counts_y.items():
        if value%2 != 0:
            ans.append(element)
            
    return ans