题解 | #无重复数组#

		const _getUniqueNums = (start, end, n) => {
			// 补全代码
			let arrMath = [];
			for (let i = 0; i <= n; i++) {
				if (arrMath.length <= n) {
					let temp = Math.floor(Math.random() * (start - end)) + end;
					if (arrMath.indexOf(temp) == -1) {
						arrMath[arrMath.length] = temp;
						temp = '';
					}
				}
			}
			return arrMath;
		}