deno.land / x / masx200_leetcode_test@10.6.5 / maximum-number-of-vowels-in-a-substring-of-given-length / index.ts
1234567891011121314151617181920export default function maxVowels(s: string, k: number): number { let res = 0; const n = s.length; let v = 0; for (let i = 0; i < n; i++) { v += Number(yuanyin.has(s[i])); if (i === k - 1) { res = v; }
if (i >= k) { v -= Number(yuanyin.has(s[i - k])); res = Math.max(res, v); } }
return Math.min(k, res);}const yuanyin = new Set(["a", "e", "i", "o", "u"]);
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