小编Emm*_*ley的帖子

我正在尝试使用此二进制搜索代码搜索降序排序数组.然而,在我对它进行排序并尝试搜索之后,它不会带来任何结果,只是一个永远不会消失的加载图标就好像它有一个无限循环.我不确定问题是什么,因为代码看起来合乎逻辑.

这是带有4.0框架的aspx,c#.提前致谢!

    protected void Button2_Click(object sender, EventArgs e)
    {
        String item = TextBox1.Text;
        int target = Convert.ToInt16(item);
        int mid, first = 0, last = mynumbers.Length - 1;

        //for a sorted array with descending values
        while (first<=last)
        {
            mid = (first + last) / 2;
            if (target < mynumbers[mid])
                first = mid + 1;
            if (target > mynumbers[mid])
                last = mid - 1;
            else
                Label11.Text = "Target " + item + " was found at index " + mynumbers[mid];

        }