In this tutorial, we will learn writing python program to create an array (list in case of python) and calculate the sum of elements stored in the array (list).
Problem Statement
Our problem statement is like, our program should take the array size from the user and then the elements of the array (list). After taking the input, It will calculate the sum of elements of the input array (list) and print it as output.
For example:
Case 1: if the user inputs 4 as array (list) size and the array (list) elements as 1,2,3,4.
The output should be 10.
Case 2: if the user inputs 5 as array (list) size and the array (list) elements as 9,8,7,6,5.
The output should be 35.
[elementor-template id=”5256″]
Our logic to find the sum of array (list) elements
- Our program will take input to fix the size of the array (list).
- Create a variable named ‘sum’ and assign it with value 0.
- Then our program will run for a ‘for loop’ to take the inputs from the user. The inputs will be the elements (or the content) of the array (list). And also adding the elements into the variable sum.
- Print the variable sum as the output
Algorithm to find the sum of array (list) elements
Step 1: Start
Step 2: take an input from the user (let’s say size).
Step 3: Create an empty list and a variable sum with value assign is 0.
Step 4: for i in range(0,size):
elem=int(input(“Please give value for index “+str(i)+”: “))
arr.append(elem)
sum+=elem
Step 5: print sum
Step 6: Stop
[elementor-template id=”5253″]
Python code to find the sum of array (list) elements
Output 1:
Explanation:
For the input array (list) [23, 12, 2, 4, 6],
value of sum = 23 + 12 + 2 + 4 + 6 = 47.
Output 2:
Explanation:
For the input array (list) [19, 81, 67, 09, 1, 12],
value of sum =19 + 81 + 76 + 9 + 1 + 12 = 189.