Package g0601_0700.s0659_split_array_into_consecutive_subsequences

Class Solution

java.lang.Object
g0601_0700.s0659_split_array_into_consecutive_subsequences.Solution
public class Solution extends java.lang.Object
659 - Split Array into Consecutive Subsequences.

Medium

You are given an integer array nums that is sorted in non-decreasing order.

Determine if it is possible to split nums into one or more subsequences such that both of the following conditions are true:

  • Each subsequence is a consecutive increasing sequence (i.e. each integer is exactly one more than the previous integer).
  • All subsequences have a length of 3 or more.

Return true if you can split nums according to the above conditions, or false otherwise.

A subsequence of an array is a new array that is formed from the original array by deleting some (can be none) of the elements without disturbing the relative positions of the remaining elements. (i.e., [1,3,5] is a subsequence of [1,2,3,4,5] while [1,3,2] is not).

Example 1:

Input: nums = [1,2,3,3,4,5]

Output: true

Explanation: nums can be split into the following subsequences:

[1 , 2 , 3 ,3,4,5] –> 1, 2, 3

[1,2,3, 3 , 4 , 5 ] –> 3, 4, 5

Example 2:

Input: nums = [1,2,3,3,4,4,5,5]

Output: true

Explanation: nums can be split into the following subsequences:

[1 , 2 , 3 ,3, 4 ,4, 5 ,5] –> 1, 2, 3, 4, 5

[1,2,3, 3 ,4, 4 ,5, 5 ] –> 3, 4, 5

Example 3:

Input: nums = [1,2,3,4,4,5]

Output: false

Explanation: It is impossible to split nums into consecutive increasing subsequences of length 3 or more.

Constraints:

  • 1 <= nums.length <= 104
  • -1000 <= nums[i] <= 1000
  • nums is sorted in non-decreasing order.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isPossible(int[] nums)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • isPossible

      public boolean isPossible(int[] nums)