8.md

Last Visited Integers

bool isStringNumeric(const string& str) {
    for (char c : str) {
        if (!isdigit(c)) {
            return false;
        }
    }
    return true;
}

class Solution {
public:
    vector<int> lastVisitedIntegers(vector<string>& words) {
        
        
        vector<int> inte;
        vector<int> ans;
        
        int k=1;
        
        for(int i=0;i<words.size();i++)
        {
            if(isStringNumeric(words[i]))
                inte.push_back(stoi(words[i]));
            
            else
            {
                if(i!=0 && !isStringNumeric(words[i-1]))
                {
                    k++;
                }
                else
                    k=1;
                reverse(inte.begin(),inte.end());
                if(k>inte.size())
                    ans.push_back(-1);
                else
                    ans.push_back(inte[k-1]);
                reverse(inte.begin(),inte.end());
            }
            
        }
        return ans;
    }
};