How do you find the lcm of a number in javascript?
The Least Common Multiple (LCM) of two integers is the smallest positive integer that is perfectly divisible by both integers. Show For example, the LCM of 6 and 8 is 24. Example 1: LCM Using while Loop and if Statement
Output Enter a first positive integer: 6 Enter a second positive integer: 8 The LCM of 6 and 8 is 24 In the above program, the user is prompted to enter two positive integers. The greater number among the numbers provided by the user is stored in a min variable. The LCM of two numbers cannot be less than the greater number. The while loop is used with an
The LCM of two numbers can also be found using the formula: LCM = (num1*num2) / HCF To learn about how to find the HCF, visit the JavaScript program to find HCF. Example 2: LCM Calculation Using HCF
Output Enter a first positive integer: 6 Enter a second positive integer: 8 The LCM of 6 and 8 is 24. In the above program, firstly HCF of the numbers is calculated. Then LCM is calculated using the given formula. You may have originally had a stack overflow because of a typo: you switched between The obvious answer to avoiding a stack overflow is to turn a recursive function into a non-recursive function. You can accomplish that by doing:
But perhaps you can see the mistake at this point:
you’re not ensuring that
Or without the recursion:
This is essentially equivalent to rgbchris’s solution. A more elegant method may be divide and conquer:
I would recommend moving away from the original argument being an array of two numbers. For one thing, it ends up causing you to talk about two different arrays: Finally, if you’ll be working with truly large numbers, it may be better to find the least common multiple using the prime factorization of the numbers. How do you find the LCM of n numbers in Javascript?The main steps of our algorithm are:. Initialize ans = arr[0].. Iterate over all the elements of the array i.e. from i = 1 to i = n-1. At the ith iteration ans = LCM(arr[0], arr[1], …….., arr[i-1]). This can be done easily as LCM(arr[0], arr[1], …., arr[i]) = LCM(ans, arr[i]).. How do you find an LCM of a number?Find the LCM by listing multiples.. List the first several multiples of each number.. Look for multiples common to both lists. If there are no common multiples in the lists, write out additional multiples for each number.. Look for the smallest number that is common to both lists.. This number is the LCM.. |