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Python – K middle elements
When it is required to determine K middle elements, the ‘//’ operator and list slicing is used.
Below is a demonstration of the same −
Example
my_list = [34, 56, 12, 67, 88, 99, 0, 1, 21, 11]
print("The list is : ")
print(my_list)
K = 5
print("The value of K is ")
print(K)
beg_indx = (len(my_list) // 2) - (K // 2)
end_indx = (len(my_list) // 2) + (K // 2)
my_result = my_list[beg_indx: end_indx + 1]
print("The result is : " )
print(my_result)Output
The list is : [34, 56, 12, 67, 88, 99, 0, 1, 21, 11] The value of K is 5 The result is : [67, 88, 99, 0, 1]
Explanation
A list is defined and is displayed on the console.
A value for K is defined and is displayed on the console.
The length of the list is obtained and the ‘//’ operator is used.
The difference between above value and K//2 is assigned to a variable.
The sum of these two values is also assigned to a different variable.
A list slicing operation is done to access specific elements.
This is assigned to a variable.
This is displayed as the output on the console.
Updated on: 04-Sep-2021
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