在C ++中查找矩阵的最大值，最小值和平均值 [英] Find maximum, minimum, average of a matrix in C++

问题描述

如何在C ++中找到给定矩阵（ matrix [i] [j] ）中的最大值，最小值和平均值。

How do I find the maximum, minimum and average values in a given matrix (matrix[i][j]) in C++. The type is unsigned long double.

推荐答案

这里没有什么聪明的东西（只有伪代码，

There's nothing clever to be done here (pseudocode only, since this smells like HW):

for each entry in the matrix:
    add the entry to a running sum
    compare the entry to a running min
        if it's smaller, it's the new running min
    compare the entry to a running max
        if it's larger, it's the new running max
average is the sum divided by the number of entries

您可以微调优化该循环，使其效率更高或更低，没有什么你能够以算法做得更聪明。您需要查看所有 i * j 条目。无论如何。

You can micro-optimize that loop to make it more or less efficient, but there's nothing you can do algorithmically to be more clever. You need to look at all i*j entries no matter what.

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