The set S
originally contains numbers from 1 to n
. But
unfortunately, due to the data error, one of the numbers in the set got duplicated to another
number in the set, which results in repetition of one number and loss of another number.
Given an array nums
representing the data status of this set after the error.
Your task is to firstly find the number occurs twice and then find the number that is
missing. Return them in the form of an array.
Example 1:
Input: nums = [1,2,2,4] Output: [2,3]
Note: