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Python Program to find sum of array
  • Difficulty Level : Basic
  • Last Updated : 22 Oct, 2020

Given an array of integers, find the sum of its elements.

Examples :

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

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

Method 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 


Output:

Sum of the array is  34

Method 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 


Output:

Sum of the array is  34

Please refer complete article on Program to find sum of elements in a given array for more details!




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