【Codewars python 4kyu】: Strings Mix

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最新推荐文章于 2025-03-09 17:00:33 发布

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分类专栏： Codewars 文章标签： codewars python 4kyu Strings Mix

本文链接：https://blog.youkuaiyun.com/qq_36362028/article/details/100547651

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该博客介绍了 Codewars 上的一个4kyu级别的Python编程挑战，主要任务是对比两个字符串s1和s2中不同小写字母的出现频率。首先计算每个字母的最大出现次数，然后根据最大值构建结果字符串。字符串中的每个字母会按照其最大出现次数进行重复，并以数字前缀表示其在哪一个字符串中达到最大值。如果在两个字符串中都达到最大值，则前缀为数字1和2。最后，按子串长度降序并按字典序升序排列结果，并用'/'分隔。

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问题描述：

Given two strings s1 and s2, we want to visualize how different the two strings are. We will only take into account the lowercase letters (a to z). First let us count the frequency of each lowercaseletters in s1 and s2.

s1 = "A aaaa bb c"

s2 = "& aaa bbb c d"

s1 has 4 'a', 2 'b', 1 'c'

s2 has 3 'a', 3 'b', 1 'c', 1 'd'

So the maximum for 'a' in s1 and s2 is 4 from s1; the maximum for 'b' is 3 from s2. In the following we will not consider letters when the maximum of their occurrences is less than or equal to 1.

We can resume the differences between s1 and s2 in the following string: "1:aaaa/2:bbb" where 1 in 1:aaaa stands for string s1 and aaaa because the maximum for a is 4