196. Missing Number

EasyMath

Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array.

Examples

Input: [3,0,1]

Output: 2

Explanation: n = 3, so the range is [0,3]. 2 is the only number not present.

Constraints

  • n == nums.length
  • 1 <= n <= 10^4
  • 0 <= nums[i] <= n
  • All the numbers of nums are unique.
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