deno.land / x / masx200_leetcode_test@10.6.5 / missing-number / index.ts
12345678910export default function missingNumber(nums: number[]): number { const n: number = nums.length; let total: number = Math.floor(n * (n + 1) / 2);
for (let i = 0; i < n; i++) { total -= nums[i]; } return total;}
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