Python Program to Find the LCM of Array Elements

Python program to find lcm of n numbers or array elements; In this tutorial, you will learn how to find the LCM (lowest common multiple) of the elements of the array or n numbers in python.

LCM is the lowest multiple of two or more numbers. Multiples of a number are those numbers which when divided by the number leave no remainder.

Python Program to Find the LCM of the Array Elements or n Numbers

Let’s use the following algorithm to write a program to find lcm of given array elements in python:

  • Algorithm to find the LCM of array elements
  • Python program to find lcm of array elements

Algorithm to find the LCM of array elements

  • Import the math module to find the GCD of two numbers using math.gcd() function.
  • At first, find the LCM of initial two numbers using: LCM(a,b) = a*b/GCD(a,b).
  • And, then find the LCM of three numbers with the help of LCM of first two numbers using LCM(ab,c) = lcm(lcm(a1, a2), a3). The same concept we have implemented.

Python program to find lcm of array elements

# Python program to find the LCM of the array elements

# import math module
import math

# function to calculate LCM
def LCMofArray(a):
  lcm = a[0]
  for i in range(1,len(a)):
    lcm = lcm*a[i]//math.gcd(lcm, a[i])
  return lcm


# array of integers
arr1 = [1,2,3,4]
arr2 = [2,3,4,5]
arr3 = [3,4,5,6]
arr4 = [2,4,6,8,10]
arr5 = [8,4,12,40,26,28,30]

print("LCM of arr1 elements:", LCMofArray(arr1))
print("LCM of arr2 elements:", LCMofArray(arr2))
print("LCM of arr3 elements:", LCMofArray(arr3))
print("LCM of arr4 elements:", LCMofArray(arr4))
print("LCM of arr5 elements:", LCMofArray(arr5))

Output

LCM of arr1 elements: 12
LCM of arr2 elements: 60
LCM of arr3 elements: 60
LCM of arr4 elements: 120
LCM of arr5 elements: 10920

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AuthorDevendra Dode

Greetings, I'm Devendra Dode, a full-stack developer, entrepreneur, and the proud owner of Tutsmake.com. My passion lies in crafting informative tutorials and offering valuable tips to assist fellow developers on their coding journey. Within my content, I cover a spectrum of technologies, including PHP, Python, JavaScript, jQuery, Laravel, Livewire, CodeIgniter, Node.js, Express.js, Vue.js, Angular.js, React.js, MySQL, MongoDB, REST APIs, Windows, XAMPP, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL, and Bootstrap. Whether you're starting out or looking for advanced examples, I provide step-by-step guides and practical demonstrations to make your learning experience seamless. Let's explore the diverse realms of coding together.

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