problem0846

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Published: Jul 25, 2019 License: MIT Imports: 1 Imported by: 0

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846. Hand of Straights

题目

Alice has a hand of cards, given as an array of integers.

Now she wants to rearrange the cards into groups so that each group is size W, and consists of W consecutive cards.

Return true if and only if she can.

Example 1:

Input: hand = [1,2,3,6,2,3,4,7,8], W = 3
Output: true
Explanation: Alice's hand can be rearranged as [1,2,3],[2,3,4],[6,7,8].

Example 2:

Input: hand = [1,2,3,4,5], W = 4
Output: false
Explanation: Alice's hand can't be rearranged into groups of 4.

Note:

  1. 1 <= hand.length <= 10000
  2. 0 <= hand[i]<= 10^9
  3. 1 <= W <= hand.length

解题思路

见程序注释

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