Missing Number, is a LeetCode problem from math subdomain. In this post we will see how we can solve this challenge in Swift

Problem Description

You can find the full details of the problem Missing Number at LeetCode

Solution

exactly the array length, minus the sum of all the values in array

Time Complexity: O(n), Space Complexity: O(1)

Please check the main.swift snippet for the solution.

This solution originally posted at: Github by @soapyigu