문제 URL
https://programmers.co.kr/learn/courses/30/lessons/42883
-------프로그래머스 오답 문제----------------
https://sanghyu.tistory.com/136
정답코드
def solution(number, k):
answer = ''
stk = []
for i in number:
while stk and stk[-1] < i and k>0:
k-=1
stk.pop()
stk.append(i)
return "".join(stk[:len(stk)-k])