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This article mainly introduces leetcode how to view the repeated numbers in the array, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Topic link

Https://leetcode-cn.com/problems/shu-zu-zhong-zhong-fu-de-shu-zi-lcof/

Topic description

Find the duplicate numbers in the array.

All the numbers in an array nums of length n are in the range of 0 to nmur1. Some numbers in the array are duplicated

But I don't know how many numbers have been repeated, nor how many times each number has been repeated. Please find any one of the array

Duplicate numbers.

Example 1:

Enter:

[2, 3, 1, 0, 2, 5, 3]

Output: 2 or 3

Restrictions:

two

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