题解 | 队列消数

#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param tickets int整型一维数组 
# @param k int整型 
# @return int整型
#
class Solution:
    def timeRequiredToBuy(self , tickets: List[int], k: int) -> int:
        a=sum(tickets)
        threshold=tickets[k]
        for i in range(len(tickets)):
            if i<=k:
                tickets[i]=tickets[i]-threshold
            else:
                tickets[i]=tickets[i]-threshold+1
        for j in range(len(tickets)):
            if tickets[j]<0:
                tickets[j]=0
        return a-sum(tickets)