Interview questions in Python/patterns.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "*\n"
     ]
    }
   ],
   "source": [
    "# basics \n",
    "print(\"*\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n"
     ]
    }
   ],
   "source": [
    "# we need to create a patterns we must intoduce the loops\n",
    "\n",
    "for i in range(5):\n",
    "    print(\"*\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "*****"
     ]
    }
   ],
   "source": [
    "for i in range(5):\n",
    "    print(\"*\",end='')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n",
      "*\n"
     ]
    }
   ],
   "source": [
    "# now we need to create a square patren\n",
    "# before that we follow up what we have seen\n",
    "\n",
    "for i in range(5):\n",
    "    for j in range(5):\n",
    "        print(\"*\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "*************************"
     ]
    }
   ],
   "source": [
    "for i in range(5):\n",
    "    for j in range(5):\n",
    "        print(\"*\",end='')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "*****\n",
      "*****\n",
      "*****\n",
      "*****\n",
      "*****\n"
     ]
    }
   ],
   "source": [
    "for i in range(5):\n",
    "    for j in range(5):\n",
    "        print(\"*\",end='')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0 1 2 3 4 \n",
      "0 1 2 3 4 \n",
      "0 1 2 3 4 \n",
      "0 1 2 3 4 \n",
      "0 1 2 3 4 \n"
     ]
    }
   ],
   "source": [
    "# numbers\n",
    "for i in range(5):\n",
    "    for j in range(5):\n",
    "        print(j,end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* \n",
      "* * \n",
      "* * * \n",
      "* * * * \n",
      "* * * * * \n"
     ]
    }
   ],
   "source": [
    "# left half pyramid\n",
    "\n",
    "for i in range(5):\n",
    "    for j in range(i+1):\n",
    "        print(\"*\",end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1 \n",
      "1 2 \n",
      "1 2 3 \n",
      "1 2 3 4 \n",
      "1 2 3 4 5 \n"
     ]
    }
   ],
   "source": [
    "# left half pyramid using numbers\n",
    "for i in range(1,6):\n",
    "    for j in range(1,i+1):\n",
    "        print(j,end=\" \")\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* * * * * \n",
      "* * * * \n",
      "* * * \n",
      "* * \n",
      "* \n"
     ]
    }
   ],
   "source": [
    "# downward left half triangle\n",
    "for i in range(5):\n",
    "    for j in range(i,5):\n",
    "        print(\"*\",end=\" \")\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1 2 3 4 5 \n",
      "2 3 4 5 \n",
      "3 4 5 \n",
      "4 5 \n",
      "5 \n"
     ]
    }
   ],
   "source": [
    "n=6\n",
    "for i in range(1,n):\n",
    "    for j in range(i,n):     # i is limiting the columns which is j  \n",
    "        print(j,end=\" \")\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 60,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "          * \n",
      "        * * \n",
      "      * * * \n",
      "    * * * * \n",
      "  * * * * * \n"
     ]
    }
   ],
   "source": [
    "# right side half pyramid\n",
    "n=5\n",
    "for i in range(n):\n",
    "    # for spaces \n",
    "    for j in range(i,n):\n",
    "        print(\" \",end=' ')\n",
    "        \n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 51,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "          1 \n",
      "        1 2 \n",
      "      1 2 3 \n",
      "    1 2 3 4 \n",
      "  1 2 3 4 5 \n"
     ]
    }
   ],
   "source": [
    "n=6\n",
    "for i in range(1,n):\n",
    "\n",
    "    for j in range(i,n):\n",
    "        print(' ',end=' ')\n",
    "\n",
    "    for j in range(1,i+1):\n",
    "        print(j,end=' ')\n",
    "    print()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 63,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* * * * * \n",
      "  * * * * \n",
      "    * * * \n",
      "      * * \n",
      "        * \n"
     ]
    }
   ],
   "source": [
    "# downword right half pyramid\n",
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i):\n",
    "        print(' ',end=' ')\n",
    "\n",
    "    for j in range(i,n):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "    1 2 3 4 5 \n",
      "      2 3 4 5 \n",
      "        3 4 5 \n",
      "          4 5 \n",
      "            5 \n"
     ]
    }
   ],
   "source": [
    "n=6\n",
    "for i in range(1,n):\n",
    "    for j in range(i+1):\n",
    "        print(\" \",end=\" \")\n",
    "    \n",
    "    for j in range(i,n):\n",
    "        print(j,end=' ')\n",
    "    print()\n",
    "    "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 74,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "        * \n",
      "      * * * \n",
      "    * * * * * \n",
      "  * * * * * * * \n",
      "* * * * * * * * * \n"
     ]
    }
   ],
   "source": [
    "# pyramid\n",
    "\n",
    "n=5\n",
    "\n",
    "for i in range(n):\n",
    "\n",
    "    for j in range(i+1,n):\n",
    "        print(' ',end=' ')\n",
    "    \n",
    "    for j in range(i+1):\n",
    "        print(\"*\",end=' ')\n",
    "\n",
    "    for j in range(i):\n",
    "        print(\"*\",end=' ')\n",
    "    \n",
    "    print()\n",
    "    \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * * * * * \n",
      "    * * * * * * * \n",
      "      * * * * * \n",
      "        * * * \n",
      "          * \n"
     ]
    }
   ],
   "source": [
    "# downwardd hill pattern or hill pattern\n",
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print(\" \",end=\" \")\n",
    "    \n",
    "    for j in range(i+1,n):\n",
    "        print(\"*\",end=' ')\n",
    "    \n",
    "    for j in range(i,n):\n",
    "        print(\"*\",end=\" \")\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "        * \n",
      "      * * * \n",
      "    * * * * * \n",
      "  * * * * * * * \n",
      "* * * * * * * * * \n",
      "  * * * * * * * \n",
      "    * * * * * \n",
      "      * * * \n",
      "        * \n"
     ]
    }
   ],
   "source": [
    "#Diamond\n",
    "\n",
    "n=5\n",
    "\n",
    "for i in range(n):\n",
    "    for j in range(i+1,n):\n",
    "        print(\" \",end=\" \")\n",
    "    for j in range(i+1):\n",
    "        print(\"*\",end=' ')\n",
    "    for j in range(i):\n",
    "        print(\"*\",end=\" \")\n",
    "    print()\n",
    "\n",
    "for i in range(n-1):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i,n-1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i+1,n-1):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * * * \n",
      "    * * * * * \n",
      "      * * * \n",
      "        * \n",
      "        * \n",
      "      * * * \n",
      "    * * * * * \n",
      "  * * * * * * * \n"
     ]
    }
   ],
   "source": [
    "#hour glass\n",
    "\n",
    "n=5\n",
    "for i in range(n-1):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1,n-1):\n",
    "        print(\"*\",end=\" \")\n",
    "    for j in range(i,n-1):\n",
    "        print(\"*\",end=' ')\n",
    "    print()\n",
    "for i in range(n-1):\n",
    "    for j in range(i+1,n):\n",
    "        print(\" \",end=' ')\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i):\n",
    "        print('*',end=' ')\n",
    "    print()\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* \n",
      "* * \n",
      "* * * \n",
      "* * * * \n",
      "* * * * * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* * * * * \n",
      "* * * * \n",
      "* * * \n",
      "* * \n",
      "* \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i,n):\n",
    "        print('*',end=\" \")\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * \n",
      "    * * * * \n",
      "      * * * \n",
      "        * * \n",
      "          * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i,n):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "          * \n",
      "        * * * \n",
      "      * * * * * \n",
      "    * * * * * * * \n",
      "  * * * * * * * * * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i,n):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "        * \n",
      "      * * * \n",
      "    * * * * * \n",
      "  * * * * * * * \n",
      "* * * * * * * * * \n",
      "  * * * * * * * \n",
      "    * * * * * \n",
      "      * * * \n",
      "        * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1,n):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i):\n",
    "        print('*',end=' ')\n",
    "    print()\n",
    "for i in range(n-1):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1,n-1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i,n-1):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * * * \n",
      "    * * * * * \n",
      "      * * * \n",
      "        * \n",
      "          \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1,n-1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i,n-1):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * * * \n",
      "    * * * * * \n",
      "      * * * \n",
      "        * \n",
      "        * \n",
      "      * * * \n",
      "    * * * * * \n",
      "  * * * * * * * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n-1):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1,n-1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i,n-1):\n",
    "        print('*',end=' ')\n",
    "    print()\n",
    "for i in range(n-1):\n",
    "    for j in range(i+1,n):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i):\n",
    "        print('*',end=' ')\n",
    "    print()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* \n",
      "* * \n",
      "* * * \n",
      "* * * * \n",
      "* * * * * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "          * * * * * \n",
      "          * * * * \n",
      "          * * * \n",
      "          * * \n",
      "          * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(n):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i,n):\n",
    "        print('*',end=' ')\n",
    "    print()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "        * \n",
      "      * * * \n",
      "    * * * * * \n",
      "  * * * * * * * \n",
      "* * * * * * * * * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1,n):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "          * * * * * \n",
      "          * * * * \n",
      "          * * * \n",
      "          * * \n",
      "          * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(n):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i,n):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * \n",
      "    * * * * \n",
      "      * * * \n",
      "        * * \n",
      "          * \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in  range(i,n):\n",
    "        print('*',end=' ')\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  * * * * * * * \n",
      "    * * * * * \n",
      "      * * * \n",
      "        * \n",
      "          \n"
     ]
    }
   ],
   "source": [
    "n=5\n",
    "for i in range(n):\n",
    "    for j in range(i+1):\n",
    "        print(' ',end=' ')\n",
    "    for j in range(i+1,n-1):\n",
    "        print('*',end=' ')\n",
    "    for j in range(i,n-1):\n",
    "        print('*',end=' ')\n",
    "    print()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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