不使用默认算法排序字符串的std向量 [英] sorting std vector of strings without using default algorithm

问题描述

我有 std :: vector 的 std :: strings ，每个都是一个文件名。假设文件名的格式为 some_name_n.xyz 。

I have an std::vector of std::strings, each of which is a filename. Suppose filenames are of the format some_name_n.xyz.

问题是 some_name_10.xyz 小于 some_name_2.xyz 。这些文件是由其他进程生成的。

The problem is that some_name_10.xyz is less than some_name_2.xyz. The files are produced by some other process.

将_之后的数字考虑作为比较，而不仅仅是其长度，最不痛苦的方式是什么？

What is the least painful way to sort them so that the number after '_' is considered for comparison, and not just its length?

推荐答案

std :: sort 允许您指定二进制函数比较两个元素： http://www.cplusplus.com/reference/algorithm/sort/

std::sort allows you to specify a binary function for comparing two elements: http://www.cplusplus.com/reference/algorithm/sort/

现在这只是构建二进制函数的问题。部分示例如下：使用数字对std :: string进行排序？

Now it's just a matter of constructing that binary function. A partial example is here: Sorting std::strings with numbers in them?

这篇关于不使用默认算法排序字符串的std向量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！