D01_Numpy基本操作.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",
    "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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   "source": [
    "import numpy as np"
   ]
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     "text": [
      "[ 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20]\n"
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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",
    "ans = np.arange(21)\n",
    "print(ans)"
   ]
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      "text/plain": [
       "array([ 2,  4,  6,  8, 10, 12, 14, 16, 18, 20])"
      ]
     },
     "execution_count": 8,
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    "#2.呈上題，將以上數列取出偶數。\n",
    "ans[2::2]"
   ]
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   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
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       "array([ 3,  6,  9, 12, 15, 18])"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#3.呈1題，將數列取出3的倍數。\n",
    "ans[3::3]"
   ]
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   "execution_count": null,
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