Project Euler Q5 - LO Man Hei

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   "source": [
    "### Q5\n",
    "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?"
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    "def gcd(x, y):\n",
    "    return gcd(y, x%y) if y else x\n",
    "\n",
    "def lcm(x, y):\n",
    "    return (x*y)//gcd(x,y)  \n",
    "\n",
    "def lcm_vector(x_vector):\n",
    "    result = x_vector[0]\n",
    "    for x in x_vector[1:]:\n",
    "        result = lcm(result,x)\n",
    "    return result\n"
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      "CPU times: user 12 µs, sys: 1 µs, total: 13 µs\n",
      "Wall time: 14.5 µs\n"
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   "source": [
    "%%time\n",
    "lcm_vector(list(range(1,20)))"
   ]
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    "def lcm_from_one_to_n(n):\n",
    "    result = 1\n",
    "    L = []\n",
    "    for i in range(1,n+1):\n",
    "        for j in L:\n",
    "            if i%j == 0:\n",
    "                i //= j\n",
    "        L.append(i)\n",
    "        result *= i\n",
    "    return result"
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      "CPU times: user 13 µs, sys: 1 µs, total: 14 µs\n",
      "Wall time: 15.7 µs\n"
     ]
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      "text/plain": [
       "232792560"
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     "execution_count": 4,
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   ],
   "source": [
    "%%time\n",
    "lcm_from_one_to_n(20)"
   ]
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   "execution_count": null,
   "id": "b789ba2c-ae57-4690-91f4-c18eb6ecc202",
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