2315. Count Asterisks

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problem

solution

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class Solution {
public:
    int countAsterisks(string s) {
        int ret = 0;
        bool flag = false;
        for(int i=0;i<s.size() ;i++){
            if(s[i]=='|'){
                i++;
                while(i<s.size() && s[i]!='|') i++;
                // i++;
            }
            else{
                if(s[i]=='*') ret++;
                // i++;
            }
        }
        return ret;
    }
};

analysis

  • time complexity O(n)
  • space complexity O(1)