[LeetCode] Split Array into Consecutive Subsequences 将数组分割成连续子序列

Posted 2020-10-07 Grandyang

 

You are given an integer array sorted in ascending order (may contain duplicates), you need to split them into several subsequences, where each subsequences consist of at least 3 consecutive integers. Return whether you can make such a split.

Example 1:

Input: [1,2,3,3,4,5]
Output: True
Explanation:
You can split them into two consecutive subsequences : 
1, 2, 3
3, 4, 5

 

Example 2:

Input: [1,2,3,3,4,4,5,5]
Output: True
Explanation:
You can split them into two consecutive subsequences : 
1, 2, 3, 4, 5
3, 4, 5

 

Example 3:

Input: [1,2,3,4,4,5]
Output: False

 

Note:

1. The length of the input is in range of [1, 10000]

 

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