Swap values of 2 variables without using 3rd variable 🤔
Hey everyone! Today, let's learn a quick and easy way to swap two numbers in JavaScript without using a third variable.This is a very common interview question that is usually for entry level jobs. Normally, you'd use a temporary variable lets say c to swap them, but there's a much cooler way to do it without that extra variable taking up unnecessary space. So what we want to do here is that we will first store the sum of both a and b inside a,
then to assign the variable b the original value of a we now just need to subtract the value of b from the new value of a, which is the arithmetic equivalent of subtracting the value 3 from 1 +3 so we are just left with 1, which is the orignal value of a. Once this is done using the same principle we remove this new b value from a + b leaving us with 3 which can now be assigned to a.
On this page of the site you can watch the video online Swap values of 2 variables without using 3rd variable 🤔 with a duration of hours minute second in good quality, which was uploaded by the user Mayank Srivastava 18 June 2024, share the link with friends and acquaintances, this video has already been watched 1,333 times on youtube and it was liked by 32 viewers. Enjoy your viewing!
