【愚公系列】2021年11月 C#版 数据结构与算法解析(插值查找)

public class Program {

    public static void Main(string[] args) {
        int[] array = { 8, 11, 21, 28, 32, 43, 48, 56, 69, 72, 80, 94 };

        Console.WriteLine(InterpolationSearch(array, 80, 0, array.Length - 1));

        Console.ReadKey();
    }

    private static int InterpolationSearch(int[] array, int key, int low, int high) {
        if (low > high) return -1;
        var mid = (int)(low + ((double)key - array[low]) / 
            (array[high] - array[low]) * (high - low));
        if (array[mid] == key)
            return mid;
        else if (array[mid] > key)
            return InterpolationSearch(array, key, low, mid - 1);
        else
            return InterpolationSearch(array, key, mid + 1, high);
    }

}