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vector :: insert vs push_back

admin 11月 13, 2020 0

Function

Function

v.insert() vs v.push_back()

You can use insert to perform the same job as push_back with v.insert(v.end(), value)

ex 1)
    vector<int> v = {1, 3, 4};
    
    int val = 5;
    
    // [1]
    v.insert(v.begin(), val );
    v --> {5,1,3,4}
    v.push_back(6);
    v --> {5,1,3,4,6}

    // [2]
    v.insert(next(v.begin()), val );
    v --> {1,5,3,4}
    v.push_back(6);
    v --> {5,1,3,4,6}
    