如何从特定的数字集中找到一个最近的 أكبر 数字: JavaScript?
我们有一组数字,我们的要求是查找一个与提供给函数的输入作为特定数字相等的或最近的高于 key 的值。
数字集定义为 −
const numbers = { A:107, B:112, C:117, D:127, E:132, F:140, G:117, H:127, I:132, J:132, K:140, L:147, M:117, N:127, O:132 };
示例
此代码将是 −
const numbers = { A:107, B:112, C:117, D:127, E:132, F:140, G:117, H:127, I:132, J:132, K:140, L:147, M:117, N:127, O:132 }; const nearestHighest = (obj, val) => { let diff = Infinity; const nearest = Object.keys(obj).reduce((acc, key) => { let difference = obj[key] - val; if (difference >= 0 && difference < diff) { diff = difference; acc = [key]; } return acc; }, []) return nearest; }; console.log(nearestHighest(numbers, 140));
输出
并且控制台中的输出将为 −
['F']
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