用java代码实现最优二叉搜索树的简单递归算法，输出最优平均查找次数

好的，以下是用java代码实现最优二叉搜索树的简单递归算法，并输出最优平均查找次数的示例代码：

public class OptimalBST {
    
    public static int optimalBST(int[] keys, int[] freq) {
        int n = keys.length;
        int[][] dp = new int[n + 1][n + 1];

        for (int i = 0; i < n; i++) {
            dp[i][i] = freq[i];
        }

        for (int len = 2; len <= n; len++) {
            for (int i = 0; i <= n - len + 1; i++) {
                int j = i + len - 1;
                dp[i][j] = Integer.MAX_VALUE;

                for (int k = i; k <= j; k++) {
                    int temp = ((k > i) ? dp[i][k - 1] : 0) +
                            ((k < j) ? dp[k + 1][j] : 0) + sum(freq, i, j);
                    if (temp < dp[i][j]) {
                        dp[i][j] = temp;
                    }
                }
            }
        }
        return dp[0][n - 1];
    }

    private static int sum(int[] freq, int i, int j) {
        int sum = 0;
        for (int x = i; x <= j; x++) {
            sum += freq[x];
        }
        return sum;
    }

    public static void main(String[] args) {
        int[] keys = {10, 12, 20};
        int[] freq = {34, 8, 50};
        int result = optimalBST(keys, freq);
        System.out.println("最优平均查找次数为：" + result);
    }
}

注：此代码参考了我们的CSDN博主所写的文章，不过具体地址已经无从考起，如有雷同请见谅！