求数组和的Python程序-yiteyi-C++库

给定一个整数数组，求其元素之和。

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例如：

Input : arr[] = {1, 2, 3}
Output : 6
1 + 2 + 3 = 6

Input : arr[] = {15, 12, 13, 10}
Output : 50

方法1：

                     # Python 3 code to find sum                   
                     # of elements in given array                   
                     def                               _sum(arr):                   
                             
                                         # initialize a variable                   
                                         # to store the sum                   
                                         # while iterating through                   
                                         # the array later                   
                                         sum                               =                               0                   
                             
                                         # iterate through the array                   
                                         # and add each element to the sum variable                   
                                         # one at a time                   
                                         for                               i                               in                               arr:                   
                                         sum                               =                               sum                               +                               i                   
                             
                                         return                               (                               sum                               )                   
                             
                     # driver function                   
                     arr                               =                               []                   
                     # input values to list                   
                     arr                               =                               [                               12                               ,                               3                               ,                               4                               ,                               15                               ]                   
                             
                     # calculating length of array                   
                     n                               =                               len                               (arr)                   
                             
                     ans                               =                               _sum(arr)                   
                             
                     # display sum                   
                     print                               (                               'Sum of the array is '                               , ans)                   
                             
                     # This code is contributed by Himanshu Ranjan                   

输出：

Sum of the array is  34

方法2：

                     # Python 3 code to find sum                   
                     # of elements in given array                   
                     # driver function                   
                     arr                               =                               []                   
                             
                     # input values to list                   
                     arr                               =                               [                               12                               ,                               3                               ,                               4                               ,                               15                               ]                   
                             
                     # sum() is an inbuilt function in python that adds                   
                     # all the elements in list,set and tuples and returns                   
                     # the value                   
                     ans                               =                               sum                               (arr)                   
                             
                     # display sum                   
                     print                               (                               'Sum of the array is '                               ,ans)                   
                             
                     # This code is contributed by Dhananjay Patil                   

输出：

Sum of the array is  34

请参阅完整的文章求给定数组中元素之和的程序更多细节！

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