35 lines
657 B
C++
35 lines
657 B
C++
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// vector 的插入操作
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#include <bits/stdc++.h>
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using namespace std;
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template <typename T>
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void print(vector<T> &v)
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{
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typename vector<T>::iterator it = v.begin();
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while (it != v.end())
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{
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cout << *it << " ";
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it++;
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}
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cout << endl;
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}
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int main()
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{
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int arr1[5] = {1, 2, 3, 4, 5};
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vector<int> v1(arr1, arr1 + 5);
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print(v1);
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vector<int>::iterator it = v1.begin();
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v1.insert(it, 1, 10); // 在 it 位置插入 1 个 10
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print(v1);
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vector<int>::iterator it2 = v1.begin();
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v1.insert(it2, 2, 9); // 在 it 位置插入 2 个 9，之前的元素会向后移动
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print(v1);
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return 0;
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}
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