Leetcode-950 Reveal Cards In Increasing Order(按递增顺序显示卡牌)

 1 class Solution
 2 {
 3     public:
 4         vector<int> deckRevealedIncreasing(vector<int>& deck)
 5         {
 6             sort(deck.begin(),deck.end());
 7             vector<int> rnt (deck.size(),0);
 8             int deckend = 0;
 9             int flag = 1;
10             for(int i = 0;deckend < deck.size();i = (i+1)%(deck.size()))
11             {
12                 if(!rnt[i])
13                 {
14                     if(flag) rnt[i] = deck[deckend++];
15                     flag = !flag;
16                 }
17             }
18             return rnt;
19         }
20 };

参考了大神的代码，本质是约瑟夫环。在还没填上数字的空格里隔一个填一个