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1133. Largest Unique Number

Given an array of integers A, return the largest integer that only occurs once.

If no integer occurs once, return -1.

 

Example 1:

Input: [5,7,3,9,4,9,8,3,1]
Output: 8
Explanation: 
The maximum integer in the array is 9 but it is repeated. The number 8 occurs only once, so it's the answer.

Example 2:

Input: [9,9,8,8]
Output: -1
Explanation: 
There is no number that occurs only once.

 

Note:

  1. 1 <= A.length <= 2000
  2. 0 <= A[i] <= 1000

Difficulty:

Easy

Lock:

Prime

Company:

Amazon

Problem Solution

1133-Largest-Unique-Number

All Problems:

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All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.