Cracking the coding interview: Missing number in array — 7

Input:
N = 5
A[] = {1,2,3,5}
Output: 4
Input:
N = 10
A[] = {6,1,2,8,3,4,7,10,5}
Output: 9

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store