Homework/Day_01_HW.ipynb

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    "作業目標:<br>\n",
    "在array中，可以靈活應用索引幫助資料擷取<br>\n",
    "\n",
    "作業重點:<br>\n",
    "陣列的索引、切片、以及屬性，皆需要注意使用方式<br>\n",
    "陣列之中索引式由0開始請同學注意"
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    "題目:<br>\n",
    "1.生成一個等差數列，首數為0，尾數為20，公差為1的數列。<br>\n",
    "2.呈上題，將以上數列取出偶數。<br>\n",
    "3.呈1題，將數列取出3的倍數。<br>"
   ]
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     "text": [
      "NumPy 版本:  1.18.5\n"
     ]
    }
   ],
   "source": [
    "import numpy as np\n",
    "print( 'NumPy 版本: ', np.__version__ )"
   ]
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     "data": {
      "text/plain": [
       "array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16,\n",
       "       17, 18, 19, 20])"
      ]
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     "execution_count": 2,
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   "source": [
    "#1.生成一個等差數列，首數為0，尾數為20，公差為1的數列。\n",
    "ArithmeticSequence = np.arange(0,21)\n",
    "ArithmeticSequence"
   ]
  },
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   "execution_count": 3,
   "metadata": {
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    {
     "data": {
      "text/plain": [
       "[0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20]"
      ]
     },
     "execution_count": 3,
     "metadata": {},
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   ],
   "source": [
    "#2.呈上題，將以上數列取出偶數。\n",
    "even = [ i for i in ArithmeticSequence if i%2==0 ]\n",
    "even"
   ]
  },
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   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "id": "7-HcNGFsFD-_"
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   "outputs": [
    {
     "data": {
      "text/plain": [
       "[3, 6, 9, 12, 15, 18]"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#3.呈1題，將數列取出3的倍數。\n",
    "odd = [ i for i in ArithmeticSequence if i>0 and i%3==0 ]\n",
    "odd"
   ]
  }
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