首页ns=sorted(sorted(s),key=lambda x:s.count(x),reverse=True)[0]

ns=sorted(sorted(s),key=lambda x:s.count(x),reverse=True)[0]

时间: 2023-11-26 17:03:28 浏览: 116

python3 -sorted函数对所有可迭代的对象进行排序操作 sorted(corr_list,key=lambda x: -abs(x[0]))

5星 · 资源好评率100%

sorted() 函数对所有可迭代的对象进行排序操作。返回重新排序的列表。 sort 与 sorted 区别： sort 是应用在 list 上的方法，sorted 可以对所有可迭代的对象进行排序操作。 list 的 sort 方法返回的是对已经存在的列表进行操作，无返回值，而内建函数 sorted 方法返回的是一个新的 list，而不是在原来的基础上进行的操作。当待排 sorted 语法： sorted(iterable, cmp=None, key=None, reverse=False) 参数说明： iterable – 可迭代对象。 cmp – 比较的函数，这个具有两个

This line of code sorts the characters in a string 's' in ascending order, and then sorts them again in descending order based on their frequency of occurrence in the string. Finally, it selects the character with the highest frequency of occurrence and assigns it to the variable 'ns'. Here's a step-by-step breakdown of how this line of code works: 1. `sorted(s)` sorts the characters in the string 's' in ascending order. 2. `sorted( ... , key=lambda x: s.count(x), reverse=True)` sorts the characters again, but this time based on their frequency of occurrence in the string. The `key` parameter specifies that the lambda function `lambda x: s.count(x)` should be used to determine the sorting order. This lambda function takes a character 'x' and returns the number of times it appears in the string 's'. The `reverse` parameter is set to `True` to sort the characters in descending order. 3. `[0]` selects the first character in the sorted list, which has the highest frequency of occurrence. 4. Finally, this character is assigned to the variable 'ns'.

阅读全文