Kotlin Leetcode - 2367. Number of Arithmetic Triplets

題目連接

class Solution {
    fun arithmeticTriplets(nums: IntArray, diff: Int): Int {
        
    }
}

解題思路

這一題考的是對陣列的處理

利用 Kotlin 內建的 count 跟 contains

可以很快的解決

Kotlin 參考解答

class Solution {
    fun arithmeticTriplets(nums: IntArray, diff: Int): Int = nums.count {
        nums.contains(it)
            && nums.contains(it + diff)
            && nums.contains(it + diff + diff)
    }
}

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