C++ 插入排序崩溃

Question

我创建了一个 vector 并用随机整数填充它。然后我打印出所有未排序的值并调用 insertionSort()。在这个调用之后，数字应该按排序顺序打印。我的程序不断崩溃，我不确定为什么。

这是我的代码:

#include <cstdlib>
#include <iostream>
#include <vector>
#include <time.h>

using namespace std;

int listSize;

vector<int> intList()
{
    cout << "How many numbers do you want to sort?\n";
    cin >> listSize;
    vector<int> list;
    for (int i = 0; i < listSize; i++)
    {
        int random = rand() % 10001;
        list.push_back(random);
    }

    return list;
};

void insertionSort(vector<int>& data)
{
    int i, j, tmp;

    for (i = 1; data.size(); i++)
    {
        j = i;
        tmp = data[i];
        while (j > 0 && tmp < data[j-1])
        {
            data[j] = data[j-1];
            j--;
        }
        data[j] = tmp;
    }
}

int main(int argc, char** argv)
{
    srand(time(0));
    vector<int> list = intList();
    for (vector<int>::iterator it = list.begin(); it != list.end(); it++)
    {
        cout << *it << " ";
    }
    cout << "\n";

    insertionSort(list);

    for (vector<int>::iterator it = list.begin(); it != list.end(); it++)
    {
        cout << *it << " ";
    }

}

Answer 1

这个

for (i = 1; data.size(); i++)

应该是:

for (i = 1; i<data.size(); ++i)

否则 for 永远不会中断。