Calculating the sum of elements in an array is a common task in programming. This article explains how to write a Python program to compute the sum of all elements in an array efficiently.
In Python, an array is a collection of elements of the same type. Arrays are particularly useful when you want to store multiple values and perform operations like summing up the elements. Although Python lists can function like arrays, you can also use the array module for stricter type enforcement.
Write a Python program to find the sum of elements in a given array. The program should:
Example:
Input:
Enter the size of the array: 3
Enter array elements:
1
2
3
Output:
Sum: 6
Get the size of the array from the user.
# Python program to calculate the sum of array elements
# Step 1: Initialize an empty list
lst = []
# Step 2: Input the size of the array
num = int(input(“Enter the size of the array: “))
# Step 3: Collect array elements
print(“Enter array elements: “)
for _ in range(num):
element = int(input())
lst.append(element)
# Step 4: Calculate the sum using the built-in sum() function
array_sum = sum(lst)
# Step 5: Output the sum
print(“Sum:”, array_sum)
Q1. Can I use arrays from the array module instead of lists?
Example:
from array import array
arr = array(‘i’, [1, 2, 3])
print(“Sum:”, sum(arr))
Q2. How do I handle invalid inputs?
Q3. What if the array is empty?
This simple Python program demonstrates how to calculate the sum of array elements using both user input and built-in functions. You can extend this logic to handle more complex scenarios or integrate it into larger programs.