Python中的max（）和min（）-yiteyi-C++库

本文向您介绍了Python的一个非常有趣且鲜为人知的函数，即麦克斯（）和 min（）现在，当与它们的C++对应比较时，它们只允许两个参数，它们过于严格地是浮点、int或char，这些函数是 不仅限于2个元素 但是 可以将许多元素作为参数保存，还可以支持字符串 在他们的参数中，因此允许按字典顺序显示最小或最大的字符串。详细功能说明如下。

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麦克斯（）

此函数用于计算在其参数中传递的值的最大值，以及如果字符串作为参数传递，则按字典顺序计算的最大值。

Syntax : max(a,b,c,..,key,default)Parameters : a,b,c,.. :  similar type of data.key : key function where the iterables are passed and comparison is performeddefault : default value is passed if the given iterable is emptyReturn Value : Returns the maximum of all the arguments.Exceptions : Returns TypeError when conflicting types are compared.

Python3

                         # Python code to demonstrate the working of                       
                         # max()                       
           
                         # printing the maximum of 4,12,43.3,19,100                       
                         print                                     (                                     "Maximum of 4,12,43.3,19 and 100 is : "                                     ,end                                     =                                     "")                       
                         print                                     (                                     max                                     (                                     4                                     ,                                     12                                     ,                                     43.3                                     ,                                     19                                     ,                                     100                                     ) )                       

输出：

Maximum of 4,12,43.3,19 and 100 is : 100

min（）

此函数用于计算在其参数中传递的值的最小值，如果字符串作为参数传递，则用于计算字典中的最小值。

Syntax : min(a,b,c,.., key,default)Parameters : a,b,c,.. :  similar type of data.key : key function where the iterables are passed and comparison is performeddefault : default value is passed if the given iterable is emptyReturn Value : Returns the minimum of all the arguments.Exceptions : Returns TypeError when conflicting types are compared.

Python3

                         # Python code to demonstrate the working of                       
                         # min()                       
           
                         # printing the minimum of 4,12,43.3,19,100                       
                         print                                     (                                     "Minimum of 4,12,43.3,19 and 100 is : "                                     ,end                                     =                                     "")                       
                         print                                     (                                     min                                     (                                     4                                     ,                                     12                                     ,                                     43.3                                     ,                                     19                                     ,                                     100                                     ) )                       

输出：

Minimum of 4,12,43.3,19 and 100 is : 4

例外

1.类型错误： 这些函数在 比较冲突的数据类型 .

Python3

                         # Python code to demonstrate the Exception of                       
                         # min() and max()                       
           
                         # printing the minimum of 4,12,43.3,19, "GeeksforGeeks"                       
                         # Throws Exception                       
                         print                                     (                                     "Minimum of 4,12,43.3,19 and GeeksforGeeks is : "                                     ,end                                     =                                     "")                       
                         print                                     (                                     min                                     (                                     4                                     ,                                     12                                     ,                                     43.3                                     ,                                     19                                     ,                                     "GeeksforGeeks"                                     ) )                       

输出：

Minimum of 4,12,43.3,19 and GeeksforGeeks is :

运行时错误：

Traceback (most recent call last):  File "/home/b5da1d7f834a267f94fbbefe1b31a83c.py", line 7, in     print (min( 4,12,43.3,19,"GeeksforGeeks" ) )TypeError: unorderable types: str() < int()

实际应用

其中一个实际应用是发现 词典学上最大和最小的 指字符串，即在字典中最先出现或最后出现的字符串。

Python3

                         # Python code to demonstrate the Application of                       
                         # min() and max()                       
           
                         # printing the word occurring 1st among these in dict.                       
                         # "geeks", "manjeet", "algorithm", "programming"                       
                         print                                     (                                     "The word occurring 1st in dict. among given is : "                                     ,end                                     =                                     "")                       
                         print                                     (                                     min                                     (                                     "geeks"                                     ,                                     "manjeet"                                     ,                                     "algorithm"                                     ,                                     "programming"                                     ) )                       
           
                         # printing the word occurring last among these in dict.                       
                         # "geeks", "manjeet", "algorithm", "programming"                       
                         print                                     (                                     "The word occurring last in dict. among given is : "                                     ,end                                     =                                     "")                       
                         print                                     (                                     max                                     (                                     "geeks"                                     ,                                     "manjeet"                                     ,                                     "algorithm"                                     ,                                     "programming"                                     ) )                       

输出：

The word occurring 1st in dict. among given is : algorithmThe word occurring last in dict. among given is : programming

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