[프로그래머스] 조이스틱

다른 사람의 풀이

def solution(name):
    change = [min(ord(i) - ord("A"), ord("Z")-ord(i)+1) for i in name]
    print(change)
    idx = 0
    answer = 0

    while True:
        answer += change[idx]
        change[idx] = 0
        
        if sum(change) == 0:
            return answer    # until sum of change = 0
        
        left, right = 1, 1
        while change[idx - left] == 0:
            left += 1
        while change[idx + right] == 0:
            right += 1
        answer += left if left < right else right
        idx += -left if left < right else right