_2367

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Published: Feb 20, 2024 License: MIT Imports: 1 Imported by: 0

README

算术三元组的数目

给你一个下标从 0 开始、严格递增 的整数数组 nums 和一个正整数 diff 。如果满足下述全部条件,则三元组 (i, j, k) 就是一个 算术三元组

  • i < j < k
  • nums[j] - nums[i] == diff
  • nums[k] - nums[j] == diff 返回不同 算术三元组 的数目_。_

示例 1:

输入:nums = [0,1,4,6,7,10], diff = 3
输出:2
解释:
(1, 2, 4) 是算术三元组:7 - 4 == 3 且 4 - 1 == 3 。
(2, 4, 5) 是算术三元组:10 - 7 == 3 且 7 - 4 == 3 。

示例 2:

输入:nums = [4,5,6,7,8,9], diff = 2
输出:2
解释:
(0, 2, 4) 是算术三元组:8 - 6 == 2 且 6 - 4 == 2 。
(1, 3, 5) 是算术三元组:9 - 7 == 2 且 7 - 5 == 2 。

提示:

  • 3 <= nums.length <= 200
  • 0 <= nums[i] <= 200
  • 1 <= diff <= 50
  • nums严格 递增

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