Python | Maximum sum of list items in a list of lists

Python Methods and Functions

Examples:

 Input: [[1, 2, 3], [4, 5, 6], [10, 11, 12], [7, 8, 9]] Output: 33 Explanation: sum of all lists in the given list of lists are: list1 = 6, list2 = 15, list3 = 33, list4 = 24 so the maximum among these is of Input: [[3, 4, 5], [1, 2, 3], [0, 9, 0]] Output: 12 

Method 1: list traversal in lists

We can move through the lists within the list and sum all the elements in the given list and use the max function to get the maximum sum of all the elements in the lists of the list.

# Python program to search
# list in the list of lists whose
# sum elements highest
# use bypass

 

de f maximumSum (list1):

maxi = 0

  

# crawl lists

for x in list1:

sum = 0  

# crawl list of lists

for y in x:

sum + =

  maxi = max ( sum , maxi) 

  

  return maxi

 
# driver code

list1 = [[ 1 , 2 , 3 ], [ 4 , 5 , 6 ], [ 10 , 11 , 12 ], [ 7 , 8 , 9 ]]

print maximumSum (list1)

Exit:

 33 

Method 2: traversing the list

Traverse only the outer list and sum all the elements in the inner lists using the

# Program mma Python to search
# list in the list of lists whose
# the sum of the elements is the highest
# using sum and max function and bypass

 

def maximumSum (list1):

maxi = 0

# workaround

for x in list1:

maxi = max ( sum (x) , maxi)

 

return maxi

 

 
# driver code

list1 = [[ 1 , 2 , 3 ], [ 4 , 5 , 6 ], [ 10 , 11 , 12 ], [ 7 ,   8 , 9 ]]

print maximumSum (list1)

Exit:

 33 

Method 3: Sum and Max Function

  sum (max (list1, key = sum))  

The above function syntax max () allows us to find the sum of a list in a list using key = sum max (list1, key = sum) , this finds the list with the maximum sum of elements, and then sum (max (list1, key = sum)) returns us the sum of that list.

# Python program to search
# list in the list of lists whose
# the sum of the elements is the highest
# using the sum and max function

 

def maximumSum (list1):

return ( sum ( max (list1, key = sum )))

 

 
# driver code

list1 = [[ 1 , 2 , 3 ], [ 4 , 5 , 6 ], [ 10 , 11 , 12 ], [ 7 , 8 , 9 ]]

prin t maximumSum (list1)

Exit :

 33 




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