How do you find the missing number in a given integer array of 1-100

Question

Arrays

Answer 1

If you sort the array, you can count from 1 and the missing value is found, when the count does not match the current array element.

Answer 2

https://code.sololearn.com/cSHiRlE9RMdt/?ref=app

Answer 3

you can do something like this:

https://code.sololearn.com/csq7fV0F92Jj/?ref=app

https://code.sololearn.com/c3eh3fUEwy5c/?ref=app