deno.land / x / masx200_leetcode_test@10.6.5 / number-of-arithmetic-triplets / index.ts
1234567891011export default function arithmeticTriplets( nums: number[], diff: number,): number { const set = new Set(nums); return nums.reduce( (a, v) => a + Number(set.has(v - diff) && set.has(v - 2 * diff)), 0, );}
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