假设这些是我的数据:
‘Maps‘ and ‘Reduces‘ are two phases of solving a query in HDFS.
‘Map’ is responsible to read data from input location.
it will generate a key value pair.
that is, an intermediate output in local machine.
’Reducer’ is responsible to process the intermediate.
output received from the mapper and generate the final output.
我想在每一行添加一个数字,如下面的输出:
1,‘Maps‘ and ‘Reduces‘ are two phases of solving a query in HDFS.
2,‘Map’ is responsible to read data from input location.
3,it will generate a …如何检查两个列表,哪一个与其他列表相反,并在每个位置提取最小值,例如:
list1 = [3,4,5,2,1,7,4,1]
list2 = [1,4,7,1,2,5,4,3]
Output = [1,4,5,1,1,5,4,1]
这是我的代码:
min(list1, list2)
但这是错的.
我有一个多个偶数和奇数的数组,我如何将这个数组变成奇数元素的数组,例如:忽略奇数元素但偶数元素加1;
Input_array = [3,67,2,34,55,73,96,21,13,15,16]
Output_array = [3,67,3,35,55,73,97,21,13,15,17]
这是我的代码:
Output_array = [(x+1) for x in Input_array if x%2 == 0]
但这只Output_array包含(偶数元素+ 1)并非所有元素[3, 35, 97, 17]