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Published: Jan 3, 2021 License: MIT

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数组拆分 I

给定长度为 2n****的整数数组 nums ,你的任务是将这些数分成 n **** 对, 例如 (a 1 , b 1 ), (a 2 , b 2 ), ..., (a n , b n ) ,使得从 1 到 nmin(a i , b i ) 总和最大。

返回该 最大总和

 

示例 1:

` **输入:**nums = [1,4,3,2] **输出:**4 **解释:**所有可能的分法(忽略元素顺序)为:

  1. (1, 4), (2, 3) -> min(1, 4) + min(2, 3) = 1 + 2 = 3
  2. (1, 3), (2, 4) -> min(1, 3) + min(2, 4) = 1 + 2 = 3
  3. (1, 2), (3, 4) -> min(1, 2) + min(3, 4) = 1 + 3 = 4 所以最大总和为 4`

示例 2:

**输入:**nums = [6,2,6,5,1,2] **输出:**9 **解释:**最优的分法为 (2, 1), (2, 5), (6, 6). min(2, 1) + min(2, 5) + min(6, 6) = 1 + 2 + 6 = 9

 

提示:

  • 1 4
  • nums.length == 2 * n
  • `-10 4

4 `

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