数组取交集,并集,差集

mac2025-01-30  31

数组取交集,并集,差集

const a =[1, 2, 3] const b = [2, 3, 4]; // 并集 const s = Array.from(new Set([...a, ...b])); // [ 1, 2, 3, 4 ] // 交集、差集 const bSet = new Set(b); const interestSet = a.filter(v => bSet.has(v)); // [ 2, 3 ] const interestSet = a.filter(v => !bSet.has(v)); // [ 1 ]
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