[프로그래머스] 숫자 문자열과 영단어 _ 2020 카카오 인턴십 문제 풀이

def solution(numbers, hand):
    answer = ''
    l_hand, r_hand = '*', '#'
    keys = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '*', '0', '#']
    dict = {}
    for r in range(4):
        for c in range(3):
            i = 3 * r + c
            dict[str(keys[i])] = (r, c)

    for num in [str(num) for num in numbers]:
        if num in ['1', '4', '7']:
            answer += 'L'
            l_hand = num
        elif num in ['3', '6', '9']:
            answer += 'R'
            r_hand = num
        else:
            l_dist = abs(dict[l_hand][0] - dict[num][0]) + abs(dict[l_hand][1] - dict[num][1])
            r_dist = abs(dict[r_hand][0] - dict[num][0]) + abs(dict[r_hand][1] - dict[num][1])

            if l_dist == r_dist:

                if hand == 'right':
                    answer += 'R'
                    r_hand = num
                else:
                    answer += 'L'
                    l_hand = num
                    
            elif l_dist > r_dist:
                answer += 'R'
                r_hand = num
            else:
                answer += 'L'
                l_hand = num

    return answer