function H = histogram(X, B)

序列的直方图统计

X : 输入序列

B : 直方图统计区间的中间值，按从小到大排列。

H : 直方图统计结果

注：第一个统计区间的左边界是-inf，最后一个统计区间的右边界是inf。

扩展1：采用2种或以上方法实现该函数，在算法思路、内存使用、速度上应有明显不同。

扩展2：对输入的二维矩阵进行缩放。

-function H = histogram (X, B)

　Sequence histogram

　X: input sequence

　B: the median interval histogram statistics, from small to large order.

　H: histogram statistics

Note: The first one is the left margin of statistical interval-inf, the last one is the right border of statistical interval inf.

Extension 1: Using 2 or more methods to achieve this function, the algorithm is thinking, memory usage, speed should be significantly different.

Extension 2: two-dimensional matrix of the input scaling.