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All leaked interview problems are collected from Internet.

Given a binary array, find the maximum number of consecutive 1s in this array.

**Example 1:**

Input:[1,1,0,1,1,1]Output:3Explanation:The first two digits or the last three digits are consecutive 1s. The maximum number of consecutive 1s is 3.

**Note:**

- The input array will only contain
`0`

and`1`

. - The length of input array is a positive integer and will not exceed 10,000

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