NumPy.ipynb

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  "metadata": {
    "colab": {
      "name": "NumPy.ipynb",
      "provenance": [],
      "collapsed_sections": []
    },
    "kernelspec": {
      "name": "python3",
      "display_name": "Python 3"
    }
  },
  "cells": [
    {
      "cell_type": "code",
      "metadata": {
        "id": "gTqQEjxWoZ4S",
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        "import numpy as np"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "SD8Rrh0Mqrax",
        "colab_type": "text"
      },
      "source": [
        "Basics"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "ZYlyymO8omsp",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "50c75004-952b-461b-ff89-c06cd0dd0cf5"
      },
      "source": [
        "a = np.array([1,2,3])\n",
        "print(a)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[1 2 3]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "lMlX6aTMotyW",
        "colab_type": "code",
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          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "ad4a3827-ec4e-421e-d752-e562cc3fafe5"
      },
      "source": [
        "b = np.array([[1,2,3,4],[5,6,7,8]],dtype=\"int32\")\n",
        "print(b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[[1 2 3 4]\n",
            " [5 6 7 8]]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "VQVOQCmkpFjQ",
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          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "aa6719a2-530b-4d97-b4a3-f1b282aab402"
      },
      "source": [
        "b.ndim"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "2"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 7
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "qA9AFo9SpLAB",
        "colab_type": "code",
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          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "aa9c63c7-464b-497f-a88e-5b3e4f1e1d2b"
      },
      "source": [
        "b.shape"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "(2, 4)"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 8
        }
      ]
    },
    {
      "cell_type": "code",
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          "height": 34
        },
        "outputId": "a2615314-0bb1-49fe-d7bd-c627374d7b67"
      },
      "source": [
        "b.dtype"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "dtype('int32')"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 13
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "ZXGvMl0BpSwT",
        "colab_type": "code",
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          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "20b688b3-a907-4889-826f-024c4d7cc6d1"
      },
      "source": [
        "b.itemsize"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "4"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 14
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "ZaXmrzZIpqit",
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          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "e7997b7c-0b9a-49b5-9cb0-89115731b5be"
      },
      "source": [
        "b.nbytes"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "32"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 15
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "7L-xgDEArn_2",
        "colab_type": "text"
      },
      "source": [
        "accessing elements"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "BmYolQNHp1IU",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "8393444b-90a5-43df-d0ba-877c76cee718"
      },
      "source": [
        "a=np.array([[1,2,35,8,56,87],[5,8,9,7,24,56]])\n",
        "a"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[ 1,  2, 35,  8, 56, 87],\n",
              "       [ 5,  8,  9,  7, 24, 56]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 55
        }
      ]
    },
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          "height": 34
        },
        "outputId": "61ae4b47-7ea1-4410-d947-7d54d1ef31d6"
      },
      "source": [
        "a[0,2]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "35"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 30
        }
      ]
    },
    {
      "cell_type": "code",
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        "id": "qu2t_fQbrBAk",
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          "height": 34
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        "outputId": "66f86530-9c5b-4ea5-80f1-e2dee1363d4a"
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      "source": [
        "a[0,:]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([ 1,  2, 35,  8, 56, 87])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 31
        }
      ]
    },
    {
      "cell_type": "code",
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        "id": "awIpVk2hryDL",
        "colab_type": "code",
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          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "d332335e-29c3-4ae2-b1a2-eb082e4212b5"
      },
      "source": [
        "a[:,2]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([35,  9])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 32
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "rl-k8yZXsCir",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "2c2d4708-1ecb-4252-bbaa-59413c72add9"
      },
      "source": [
        "a[0,:5:2]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([ 1, 35, 56])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 33
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "9xVeh5bvs402",
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          "height": 51
        },
        "outputId": "6b42005d-ef8b-4cd8-9275-f3b6842597af"
      },
      "source": [
        "a[0,2] = 3\n",
        "a"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[ 1,  2,  3,  8, 56, 87],\n",
              "       [ 5,  8,  9,  7, 24, 56]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 34
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "LH3cWDwTtAI6",
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          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "6bfe8687-e5d2-4de2-a0d5-0c2569943fb8"
      },
      "source": [
        "a[:,3] = [4,5]\n",
        "a"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[ 1,  2,  3,  4, 56, 87],\n",
              "       [ 5,  8,  9,  5, 24, 56]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 35
        }
      ]
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    {
      "cell_type": "code",
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        "id": "WFVdV_hTtVur",
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          "base_uri": "https://localhost:8080/",
          "height": 102
        },
        "outputId": "2a973407-97ad-47c6-ef07-8fc3be0b2837"
      },
      "source": [
        "b=np.array([[[1,2],[3,4]],[[5,6],[7,8]]])\n",
        "b"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[[1, 2],\n",
              "        [3, 4]],\n",
              "\n",
              "       [[5, 6],\n",
              "        [7, 8]]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 37
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "MWnISc8NuXgP",
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          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "8d914bd8-2000-42d2-870a-2cb71b47698f"
      },
      "source": [
        "b[0,1,0]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "3"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 41
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "Slitg2aBuoYQ",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "1ad5e054-94c6-470b-aa98-3a31cf60a924"
      },
      "source": [
        "b[:,1,:]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[3, 4],\n",
              "       [7, 8]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 43
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "-k1mqb3Dwibb",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 102
        },
        "outputId": "59eac3da-f46c-410c-b8ec-957765c40cc1"
      },
      "source": [
        "b[:,0,:]=[[9,8],[9,7]]\n",
        "b"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[[9, 8],\n",
              "        [3, 4]],\n",
              "\n",
              "       [[9, 7],\n",
              "        [7, 8]]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 44
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "8iBoofizxD23",
        "colab_type": "text"
      },
      "source": [
        "types of array"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "En4EVdaJxbM_",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 136
        },
        "outputId": "9cae1865-d38b-4fd2-c7a8-f1ba45675334"
      },
      "source": [
        "np.zeros((2,3,2))"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[[0., 0.],\n",
              "        [0., 0.],\n",
              "        [0., 0.]],\n",
              "\n",
              "       [[0., 0.],\n",
              "        [0., 0.],\n",
              "        [0., 0.]]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 50
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "L9G8C6V4xfEi",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 68
        },
        "outputId": "ef436c13-24f1-40e0-ac3b-1041e10705ee"
      },
      "source": [
        "np.ones((3,2))"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[1., 1.],\n",
              "       [1., 1.],\n",
              "       [1., 1.]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 53
        }
      ]
    },
    {
      "cell_type": "code",
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          "height": 51
        },
        "outputId": "65bc0efa-a649-43bf-d10d-4745182477e3"
      },
      "source": [
        "np.full((2,3),10)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[10, 10, 10],\n",
              "       [10, 10, 10]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 54
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "h1pAD3SKyQT0",
        "colab_type": "code",
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          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "97a0f849-362f-4378-cc45-7704650a6646"
      },
      "source": [
        "np.full_like(a,5)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[5, 5, 5, 5, 5, 5],\n",
              "       [5, 5, 5, 5, 5, 5]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 56
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "tlNSfKPFywgG",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "47d2e844-65a1-4edc-af3e-143405ff28a8"
      },
      "source": [
        "np.random.rand(2,3)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[0.7998715 , 0.71500471, 0.81728767],\n",
              "       [0.18618644, 0.87871671, 0.50871938]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 57
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "3Z-u6BDwzEcN",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 85
        },
        "outputId": "05e1d857-0bd7-4b56-c2cb-bdfd66c58464"
      },
      "source": [
        "np.random.random_sample(a.shape)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[0.33141975, 0.08868851, 0.42685855, 0.4154247 , 0.58991359,\n",
              "        0.32457504],\n",
              "       [0.25733407, 0.66577   , 0.62643118, 0.33446568, 0.61987028,\n",
              "        0.80728006]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 60
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "opmfb7fJzXsR",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 68
        },
        "outputId": "da64a0d2-1107-452e-bcca-2469701276f8"
      },
      "source": [
        "np.random.randint(2,7,size=(3,3))"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[4, 3, 6],\n",
              "       [2, 4, 6],\n",
              "       [2, 5, 4]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 63
        }
      ]
    },
    {
      "cell_type": "code",
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          "height": 68
        },
        "outputId": "7668edc1-be0b-472b-ea53-82004d4862a4"
      },
      "source": [
        "np.identity(3)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[1., 0., 0.],\n",
              "       [0., 1., 0.],\n",
              "       [0., 0., 1.]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 64
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "tuOQDtVv0Kvu",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 68
        },
        "outputId": "06f18e7f-c38c-46f0-a55b-eb5f306d70b6"
      },
      "source": [
        "arr = np.array([[1,2,3]])\n",
        "r= np.repeat(arr,3,axis=0)\n",
        "r"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[1, 2, 3],\n",
              "       [1, 2, 3],\n",
              "       [1, 2, 3]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 67
        }
      ]
    },
    {
      "cell_type": "code",
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        "id": "vDR7zxZX0zFj",
        "colab_type": "code",
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          "height": 238
        },
        "outputId": "1edc2da7-4b1c-4ca5-8fb3-f850bbc73771"
      },
      "source": [
        "mat = np.ones((5,5))\n",
        "print(mat)\n",
        "z = np.zeros((3,3))\n",
        "z[1,1] = 9\n",
        "print(z)\n",
        "mat[1:4,1:4] = z\n",
        "print(mat)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[[1. 1. 1. 1. 1.]\n",
            " [1. 1. 1. 1. 1.]\n",
            " [1. 1. 1. 1. 1.]\n",
            " [1. 1. 1. 1. 1.]\n",
            " [1. 1. 1. 1. 1.]]\n",
            "[[0. 0. 0.]\n",
            " [0. 9. 0.]\n",
            " [0. 0. 0.]]\n",
            "[[1. 1. 1. 1. 1.]\n",
            " [1. 0. 0. 0. 1.]\n",
            " [1. 0. 9. 0. 1.]\n",
            " [1. 0. 0. 0. 1.]\n",
            " [1. 1. 1. 1. 1.]]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "agE1bWgY1hj4",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "e3d0da3b-424e-4d51-c3f6-669e378536f8"
      },
      "source": [
        "a = np.array([1,2,3]) \n",
        "b = a.copy()\n",
        "b[2]=50\n",
        "print(a)\n",
        "print(b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[1 2 3]\n",
            "[ 1  2 50]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "n1fKiBj63VSk",
        "colab_type": "text"
      },
      "source": [
        "math"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "qwuTWS5M4nyU",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "f30b18e5-4a61-4a9c-d2e2-fc40b3f8df86"
      },
      "source": [
        "a= np.array([1,5,6])\n",
        "b= np.array([5,5,8])\n",
        "print(a * b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[ 5 25 48]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "pkHmmePT4zDc",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "113d3481-ebd6-40d3-e441-9dcdb8f3d858"
      },
      "source": [
        "a ** 2"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([ 1, 25, 36])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 78
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "wlG0egR342nX",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "ee7f8181-61dd-4d20-f5e3-2b100770efe1"
      },
      "source": [
        "np.cos(a)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([0.54030231, 0.28366219, 0.96017029])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 79
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "MwIXCxu1485x",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 136
        },
        "outputId": "da89daaf-a4c8-494f-8819-2002f35b9a01"
      },
      "source": [
        "a = np.ones((2,3))\n",
        "print(a)\n",
        "b = np.full((3,2),5)\n",
        "print(b)\n",
        "np.matmul(a,b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[[1. 1. 1.]\n",
            " [1. 1. 1.]]\n",
            "[[5 5]\n",
            " [5 5]\n",
            " [5 5]]\n"
          ],
          "name": "stdout"
        },
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[15., 15.],\n",
              "       [15., 15.]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 83
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "AF7bSzCC5CtH",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "f4d35f4d-97a7-441e-c3ed-e23e34f05bca"
      },
      "source": [
        "c = np.identity(3)\n",
        "np.linalg.det(c)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1.0"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 84
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "SozudPGo6Esk",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "4645d7af-0325-4630-a0c3-ac5b4e61e005"
      },
      "source": [
        "a = np.array([[1,2,3],[4,5,6]])\n",
        "np.min(a)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 86
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "OO5P6naT7Vk-",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "4166be96-1f4d-4090-dc4e-ca78782e1273"
      },
      "source": [
        "np.max(a, axis=1)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([3, 6])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 87
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "qnzF7CBS7fkg",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 34
        },
        "outputId": "affe27c0-bb88-4c3b-b9c1-75991a704179"
      },
      "source": [
        "np.sum(a)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "21"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 88
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "viDQi3gr7lDt",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 68
        },
        "outputId": "579ac839-642f-46bd-bf90-3ab1bacb1742"
      },
      "source": [
        "a = np.array([[1,2,3],[4,5,6]])\n",
        "b= a.reshape((3,2))\n",
        "print(b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[[1 2]\n",
            " [3 4]\n",
            " [5 6]]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "dVWf-beJ7sDF",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 68
        },
        "outputId": "e4ecf5d8-0d5a-4bbb-f9b4-77c1d971cdd0"
      },
      "source": [
        "v1= np.zeros(4,)\n",
        "v2 = np.ones(4,)\n",
        "np.vstack((v1,v2,v1))"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[0., 0., 0., 0.],\n",
              "       [1., 1., 1., 1.],\n",
              "       [0., 0., 0., 0.]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 93
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "tAnh7zCH8mHB",
        "colab_type": "code",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 51
        },
        "outputId": "c34cb998-1f1d-4372-f257-0bf11f3c4eda"
      },
      "source": [
        "h1= np.zeros((2,4))\n",
        "h2 = np.ones((2,2))\n",
        "np.hstack((h1,h2))"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "array([[0., 0., 0., 0., 1., 1.],\n",
              "       [0., 0., 0., 0., 1., 1.]])"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 99
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "2JU83NFE85vz",
        "colab_type": "code",
        "colab": {}
      },
      "source": [
        ""
      ],
      "execution_count": null,
      "outputs": []
    }
  ]
}