比较两个字符串，用逗号分隔值 [英] comparing two strings with comma separated values

问题描述

有什么方法可以比较两个具有逗号分隔值的字符串吗?

Is there any way by which we can compare two strings having comma separates values?

为清楚起见:

string S1 = "a,b,c,d,e"
string S2 = "c,d"
string S3 = "a,b,e"          //where string S3 is got by subtracting S2 from S1 (S1 - S2)

是否可以通过某些功能来做到这一点?

Is it possible to do this with some function?

推荐答案

如果我正确地得到了想要的东西，则希望获得两个字符串中都不存在的元素.

If I got what you want right, you want to get the elements that are not in both strings.

这就是我要怎么做:

1. 使用，作为分隔符将a和b都分开.
2. 将结果存储在两组中(例如， std :: set )
3. 计算这两个集合的差(例如，使用 std :: set_difference )
4. 通过使用，
将每个元素粘合在一起，将结果集转换为字符串

1. Split both a and b using , as a separator.
2. Store the result in two sets (std::set for instance)
3. Compute the difference of these two sets (for example, using std::set_difference)
4. Convert the resulting set to a string by gluing each element together using ,

这篇关于比较两个字符串，用逗号分隔值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！