• Aug 2, 2025 •hasnaoui1
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console.log("xa")
• Nov 19, 2022 •CodeCatch
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const reverse = str => str.split('').reverse().join(''); reverse('hello world'); // Result: 'dlrow olleh'
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const union = (...arr) => [...new Set(arr.flat())]; // Example union([1, 2], [2, 3], [3]); // [1, 2, 3]
const binomialCoefficient = (n, k) => { if (Number.isNaN(n) || Number.isNaN(k)) return NaN; if (k < 0 || k > n) return 0; if (k === 0 || k === n) return 1; if (k === 1 || k === n - 1) return n; if (n - k < k) k = n - k; let res = n; for (let j = 2; j <= k; j++) res *= (n - j + 1) / j; return Math.round(res); }; binomialCoefficient(8, 2); // 28
• Sep 13, 2023 •C S
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/** * @param {number[]} nums * @return {boolean} */ var containsDuplicate = function(nums) { return new Set(nums).size !== nums.length };
// `date` is a `Date` object const formatYmd = date => date.toISOString().slice(0, 10); // Example formatYmd(new Date()); // 2020-05-06