210818__rajit_numpy_exercise.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "6a13a8a9",
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "469dd497",
   "metadata": {},
   "outputs": [],
   "source": [
    "myarr = np.zeros(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "3794dec4",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0.])"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "myarr"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "d731aeb4",
   "metadata": {},
   "outputs": [],
   "source": [
    "myarr1=np.ones(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "a4599401",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1.])"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "myarr1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "47ffc4e1",
   "metadata": {},
   "outputs": [],
   "source": [
    "myarr2=np.ones(10)*5"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "cd113fd8",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([5., 5., 5., 5., 5., 5., 5., 5., 5., 5.])"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "myarr2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "5937d126",
   "metadata": {},
   "outputs": [],
   "source": [
    "arr=np.arange(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "601e4cc8",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "arr\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "611ee7b8",
   "metadata": {},
   "outputs": [],
   "source": [
    "arr=np.linspace(10,50,41)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "5737d1f1",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([10., 11., 12., 13., 14., 15., 16., 17., 18., 19., 20., 21., 22.,\n",
       "       23., 24., 25., 26., 27., 28., 29., 30., 31., 32., 33., 34., 35.,\n",
       "       36., 37., 38., 39., 40., 41., 42., 43., 44., 45., 46., 47., 48.,\n",
       "       49., 50.])"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "arr"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "a4adccb2",
   "metadata": {},
   "outputs": [],
   "source": [
    "arr=np.linspace(10,50,21)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "id": "84818511",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([10., 12., 14., 16., 18., 20., 22., 24., 26., 28., 30., 32., 34.,\n",
       "       36., 38., 40., 42., 44., 46., 48., 50.])"
      ]
     },
     "execution_count": 27,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "arr"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "id": "eb002c49",
   "metadata": {},
   "outputs": [],
   "source": [
    "arr3= np.arange(9)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "id": "fcbe3aca",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([0, 1, 2, 3, 4, 5, 6, 7, 8])"
      ]
     },
     "execution_count": 29,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "arr3\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "id": "f3f38715",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([[0, 1, 2],\n",
       "       [3, 4, 5],\n",
       "       [6, 7, 8]])"
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "arr3.reshape(3,3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "id": "6c13467a",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([[1., 0., 0.],\n",
       "       [0., 1., 0.],\n",
       "       [0., 0., 1.]])"
      ]
     },
     "execution_count": 31,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "np.identity(3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "id": "82ec1af9",
   "metadata": {},
   "outputs": [],
   "source": [
    "#indexing \n",
    "ar=np.linspace(1,25,25)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "id": "c5aa4819",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([ 1.,  2.,  3.,  4.,  5.,  6.,  7.,  8.,  9., 10., 11., 12., 13.,\n",
       "       14., 15., 16., 17., 18., 19., 20., 21., 22., 23., 24., 25.])"
      ]
     },
     "execution_count": 33,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ar"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "id": "54a7f8de",
   "metadata": {},
   "outputs": [],
   "source": [
    "ar1=ar.reshape(5,5)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "id": "f44335b8",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([[ 1.,  2.,  3.,  4.,  5.],\n",
       "       [ 6.,  7.,  8.,  9., 10.],\n",
       "       [11., 12., 13., 14., 15.],\n",
       "       [16., 17., 18., 19., 20.],\n",
       "       [21., 22., 23., 24., 25.]])"
      ]
     },
     "execution_count": 38,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ar1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "id": "9c8f0be5",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([[12., 13., 14., 15.],\n",
       "       [17., 18., 19., 20.],\n",
       "       [22., 23., 24., 25.]])"
      ]
     },
     "execution_count": 42,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ar1[2:5,1:5]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "id": "ceb568bb",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "325.0"
      ]
     },
     "execution_count": 43,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ar.sum()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "id": "afc1ea96",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "7.211102550927978"
      ]
     },
     "execution_count": 44,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "np.std(ar)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "id": "39193d72",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([55., 60., 65., 70., 75.])"
      ]
     },
     "execution_count": 47,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ar1.sum(axis=0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "2cd9285d",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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