Python program to find missing number in array | step by step explanation

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Hey my friend, welcome to the video of Joey’sTECH which is going to explain to you step by step the python program to find missing number in an array.

As you can see in the below array of 4 elements, there is one element missing which is 3 and we need to write a python program to find this missing element 3.

You need to keep in mind that this array must contain the numbers in a series, here the series is from 1 - 4 that’s the prerequisite.

This is another frequently asked python interview question for beginners. But if you're learning Python you should deep dive into understanding it.

And I make it very easy for you to understand it by explaining the complete python program step by step.

Therefore, you should not miss out on any step of the program and watch this video till the end.

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To watch more videos on python programming visit my channel Joey'sTech.
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Wow man hats off ! Clear crystal explanation of the solution .. make more videos ya ...related to coding

bunnyvox
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What if multiple elements are missing? U can’t find multiple missing elements by this logic

aryanlovescode
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I'm getting -1 as the missing number. Im coding in Visual studio code editor. The code has compiled successfully and is running smoothly. But there is some logical error. Im unable to figure out. :\

atufajaveed
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The fark. How you come up with the mathematical logic of n * (n +1)/2? Is it a formula?

davidaw