求数组中最大、次大值 本程序运用了算法思想，如果数据很大的时候，就可以看出本程序的效率了-Array for the largest and second largest value of this procedure to use the algorithm of thought, a lot of time if the data, we can see that the efficiency of this procedure

找出一个二维数组中的鞍点，即该位置上的元素是该行上最大，在该列上最小。也可能没有鞍点。-Find a saddle point in two-dimensional array, that is, the position of the element is the bank' s largest and the smallest in the column. May not have saddle points.