{
"metadata": {
"name": "",
"signature": "sha256:d5f3c8482f9d7c2571575eb27fc10c6b549235c3c17830e788a211d649641ac0"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter6, Arrays and pointers"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C23ARA1, Page number:482"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"s_name=\"Tri Star University\"\n",
"scores = [88.7,90.4,76.0,97.0,100.0,86.7] #integer array\n",
"average=0.0\n",
"\n",
"for ctr in range(0,6,1): #computes total of scores\n",
" average+=scores[ctr]\n",
"\n",
"average/=float(6) #computes the average\n",
"\n",
"print \"At \",s_name,\", your class average is \",'%.2f' %average,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"At Tri Star University , your class average is 89.80 \n",
"\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C23ARA2, Page number:483"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def pr_scores(scores):\n",
" print \"Here are your scores:\\n\"\n",
" for ctr in range(0,6,1):\n",
" print '%.2f' %scores[ctr],\"\\n\"\n",
" \n",
"s_name=\"Tri Star University\"\n",
"scores = [88.7,90.4,76.0,97.0,100.0,86.7] #integer array\n",
"average=0.0\n",
"\n",
"pr_scores(scores) #Function call to print scores\n",
"\n",
"for ctr in range(0,6,1): #computes total of scores\n",
" average+=scores[ctr]\n",
"\n",
"average/=float(6) #computes the average\n",
"\n",
"print \"At \",s_name,\", your class average is \",'%.2f' %average,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Here are your scores:\n",
"\n",
"88.70 \n",
"\n",
"90.40 \n",
"\n",
"76.00 \n",
"\n",
"97.00 \n",
"\n",
"100.00 \n",
"\n",
"86.70 \n",
"\n",
"At Tri Star University , your class average is 89.80 \n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C23ARA3, Page number:485"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"CLASS_NUM=6\n",
"\n",
"def pr_scores(scores): #Function definition \n",
" print \"Here are your scores:\\n\"\n",
" for ctr in range(0,CLASS_NUM,1):\n",
" print '%.2f' %scores[ctr],\"\\n\"\n",
" \n",
"s_name=\"Tri Star University\"\n",
"scores = [88.7,90.4,76.0,97.0,100.0,86.7] #Integer array\n",
"average=0.0\n",
"\n",
"pr_scores(scores) #Function call to print scores\n",
"\n",
"for ctr in range(0,CLASS_NUM,1): #Computes total of scores\n",
" average+=scores[ctr]\n",
"\n",
"average/=float(6) #Computes the average\n",
"\n",
"print \"At \",s_name,\", your class average is \",'%.2f' %average,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Here are your scores:\n",
"\n",
"88.70 \n",
"\n",
"90.40 \n",
"\n",
"76.00 \n",
"\n",
"97.00 \n",
"\n",
"100.00 \n",
"\n",
"86.70 \n",
"\n",
"At Tri Star University , your class average is 89.80 \n",
"\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C23ARA4, Page number:487"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"NUM_TEMPS=10\n",
"\n",
"temps=[]\n",
"\n",
"#Adding values into temps variable\n",
"\n",
"temps.append(78.6)\n",
"temps.append(82.1)\n",
"temps.append(79.5)\n",
"temps.append(75.0)\n",
"temps.append(75.4)\n",
"temps.append(71.8)\n",
"temps.append(73.3)\n",
"temps.append(69.5)\n",
"temps.append(74.1)\n",
"temps.append(75.7)\n",
"\n",
"#Print the temperatures\n",
"\n",
"print \"Daily temperatures for the last \",NUM_TEMPS,\"days:\\n\"\n",
"\n",
"for ctr in range(0,NUM_TEMPS,1):\n",
" print '%.2f' %temps[ctr],\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Daily temperatures for the last 10 days:\n",
"\n",
"78.60 \n",
"\n",
"82.10 \n",
"\n",
"79.50 \n",
"\n",
"75.00 \n",
"\n",
"75.40 \n",
"\n",
"71.80 \n",
"\n",
"73.30 \n",
"\n",
"69.50 \n",
"\n",
"74.10 \n",
"\n",
"75.70 \n",
"\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C23TOT, Page number:488"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"NUM=8\n",
"nums=[]\n",
"total=0\n",
"\n",
"for ctr in range(0,NUM,1):\n",
" print \"Please enter the next number...\",\n",
" nums.append(input())\n",
" total+=nums[ctr]\n",
"\n",
"#Prints the sum of eight values \n",
"print \"The total of the numbers is \",total,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"4\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"5\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"7\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Please enter the next number..."
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"8\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The total of the numbers is 36 \n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C23SAL, Page number:489"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"NUM=12\n",
"\n",
"sales=[] \n",
"\n",
"print \"Please enter the twelve monthly sales values\\n\"\n",
"\n",
"#Fill the array with input values entered by the user\n",
"for ctr in range(0,NUM,1):\n",
" print \"What are sales for month number \",ctr+1,\"?\\n\"\n",
" sales.append(input())\n",
"\n",
"for ctr in range(0,25,1):\n",
" print \"\\n\" #Clears the screen\n",
"\n",
"print \"*** Sales Printing Program ***\\n\"\n",
"print \"Prints any sales from the last \",NUM,\" months\\n\"\n",
"ans='Y'\n",
"\n",
"while ans=='Y':\n",
" print \"For what month (1-\",NUM,\") do you want to see a sales value? \" \n",
" req_month=input()\n",
" print \"\\nMonth \",req_month,\"'s sales are\",'%.2f' %sales[req_month-1]\n",
" print \"\\nDo you want to see another (Y/N)? \"\n",
" ans=raw_input().upper()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Please enter the twelve monthly sales values\n",
"\n",
"What are sales for month number 1 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"450.33\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 2 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"433.22\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 3 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"500.11\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 4 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"465.33\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 5 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"123.45\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 6 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"698.33\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 7 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"756.65\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 8 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"121.45\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 9 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"147.36\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 10 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"789.36\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 11 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"986.25\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"What are sales for month number 12 ?\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"108.36\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"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",
"\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",
"*** Sales Printing Program ***\n",
"\n",
"Prints any sales from the last 12 months\n",
"\n",
"For what month (1- 12 ) do you want to see a sales value? \n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"Month 2 's sales are 433.22\n",
"\n",
"Do you want to see another (Y/N)? \n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"y\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"For what month (1- 12 ) do you want to see a sales value? \n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"5\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"Month 5 's sales are 123.45\n",
"\n",
"Do you want to see another (Y/N)? \n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"n\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C24HIGH, Page number:496"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"SIZE=15 #Maximum size of array\n",
"\n",
"ara=[None]*SIZE #Empty Array declaration with maximum size\n",
"ara=[5,2,7,8,36,4,2,86,11,43,22,12,45,6,85]\n",
"high_val=ara[0] #initialize wit first array element\n",
"\n",
"for ctr in range(1,SIZE,1):\n",
" if ara[ctr]>high_val: #Compares with rest of the elements in the array \n",
" high_val=ara[ctr] #Stores higher value in high_val\n",
"\n",
"print \"The highest number in the list is \",high_val,\".\\n\"\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The highest number in the list is 86 .\n",
"\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C24HILO, Page number:498"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Maximum size of array\n",
"SIZE=15 \n",
"#Initialize empty array\n",
"ara=[None]*SIZE \n",
"\n",
"#Fill array with random numbers from 0 to 99\n",
"import random\n",
"for ctr in range(0,SIZE,1):\n",
" ara[ctr]=random.randint(0,99) %100 \n",
"\n",
"print \"Here are the \",SIZE,\"random numbers:\\n\" \n",
"for ctr in range(0,SIZE,1):\n",
" print ara[ctr],\"\\n\" #Prints the array\n",
" \n",
"print \"\\n\\n\"\n",
"\n",
"#Initialize first element to both high_val and low_val\n",
"high_val=ara[0] \n",
"low_val=ara[0]\n",
"\n",
"for ctr in range(1,SIZE,1):\n",
" if ara[ctr]>high_val: #Compares with rest of the elements in the array\n",
" high_val=ara[ctr] #Stores higher valure in high_val\n",
" if ara[ctr]<low_val:\n",
" low_val=ara[ctr] #Stores lower valure in low_val\n",
"\n",
"print \"The highest number in the list is \",high_val,\"\\n\"\n",
"print \"The lowest number in the list is \",low_val,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Here are the 15 random numbers:\n",
"\n",
"81 \n",
"\n",
"96 \n",
"\n",
"31 \n",
"\n",
"1 \n",
"\n",
"34 \n",
"\n",
"53 \n",
"\n",
"70 \n",
"\n",
"9 \n",
"\n",
"23 \n",
"\n",
"89 \n",
"\n",
"51 \n",
"\n",
"73 \n",
"\n",
"53 \n",
"\n",
"85 \n",
"\n",
"79 \n",
"\n",
"\n",
"\n",
"\n",
"The highest number in the list is 96 \n",
"\n",
"The lowest number in the list is 1 \n",
"\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C24SERCH, Page number:499"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"MAX=100\n",
"\n",
"def fill_parts(parts): #Function assigns first five parts to array for testing\n",
" parts[0]=12345\n",
" parts[1]=24724\n",
" parts[2]=54154\n",
" parts[3]=73496\n",
" parts[4]=83925\n",
" return parts\n",
"\n",
"parts=[None]*MAX\n",
"num_parts=5 #Beginning inventory count\n",
"\n",
"fill_parts(parts) #Fills the first five elements\n",
"\n",
"search_part=0\n",
"while search_part != -9999:\n",
" print \"\\n\\nPlease type a part number...(-9999 ends program)\",\n",
" search_part=input()\n",
" if search_part==-9999:\n",
" break #Exits the loop if user wants\n",
" \n",
" for ctr in range(0,num_parts,1): #Scans array to see whether part is in inventory\n",
" if search_part==parts[ctr]:\n",
" print \"\\nPart \",search_part,\"is already in inventory\"\n",
" break\n",
" else:\n",
" if ctr==num_parts-1:\n",
" parts[num_parts]=search_part #If not then it is added to end of the array\n",
" num_parts+=1\n",
" print search_part,\"was added to inventory\\n\"\n",
" break\n",
" \n"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C24SORT1, Page number:504"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"MAX=10\n",
"\n",
"#Fill array with random numbers from 0 to 99\n",
"def fill_array(ara):\n",
" import random\n",
" for ctr in range(0,MAX,1):\n",
" ara[ctr]=random.randint(0,99) %100\n",
"\n",
"\n",
"#Prints the array ara[]\n",
"def print_array(ara):\n",
" for ctr in range(0,MAX,1):\n",
" print ara[ctr],\"\\n\"\n",
"\n",
"#Sorts the array\n",
"def sort_array(ara):\n",
" for ctr1 in range(0,MAX-1,1):\n",
" for ctr2 in range(ctr1+1,MAX,1):\n",
" if ara[ctr1]>ara[ctr2]: #Swap if this part is not in order\n",
" temp=ara[ctr1] #Temporary variable to swap\n",
" ara[ctr1]=ara[ctr2]\n",
" ara[ctr2]=temp\n",
"\n",
"\n",
"ara=[None]*MAX\n",
"fill_array(ara)\n",
"print \"Here are the unsorted numbers:\\n\"\n",
"print_array(ara) #Prints the unsorted array\n",
"sort_array(ara) #Sorts the array in ascending order\n",
"print \"\\n\\nHere are the sorted numbers:\\n\"\n",
"print_array(ara) #Prints the sorted array"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Here are the unsorted numbers:\n",
"\n",
"68 \n",
"\n",
"41 \n",
"\n",
"53 \n",
"\n",
"40 \n",
"\n",
"69 \n",
"\n",
"65 \n",
"\n",
"64 \n",
"\n",
"48 \n",
"\n",
"87 \n",
"\n",
"18 \n",
"\n",
"\n",
"\n",
"Here are the sorted numbers:\n",
"\n",
"18 \n",
"\n",
"40 \n",
"\n",
"41 \n",
"\n",
"48 \n",
"\n",
"53 \n",
"\n",
"64 \n",
"\n",
"65 \n",
"\n",
"68 \n",
"\n",
"69 \n",
"\n",
"87 \n",
"\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C24SORT2, Page number:506"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"MAX=10\n",
"\n",
"#Fill array with random numbers from 0 to 99\n",
"def fill_array(ara):\n",
" import random\n",
" for ctr in range(0,MAX,1):\n",
" ara[ctr]=random.randint(0,99) %100\n",
"\n",
"\n",
"#Prints the array ara[]\n",
"def print_array(ara):\n",
" for ctr in range(0,MAX,1):\n",
" print ara[ctr],\"\\n\"\n",
"\n",
"#Sorts the array\n",
"def sort_array(ara):\n",
" for ctr1 in range(0,MAX-1,1):\n",
" for ctr2 in range(ctr1+1,MAX,1):\n",
" if ara[ctr1]<ara[ctr2]: #Swap if this part is not in order\n",
" temp=ara[ctr1] #Temporary variable to swap\n",
" ara[ctr1]=ara[ctr2]\n",
" ara[ctr2]=temp\n",
"\n",
"\n",
"ara=[None]*MAX\n",
"fill_array(ara)\n",
"print \"Here are the unsorted numbers:\\n\"\n",
"print_array(ara) #Prints the unsorted array\n",
"sort_array(ara) #Sorts the array in descending order\n",
"print \"\\n\\nHere are the sorted numbers:\\n\"\n",
"print_array(ara) #Prints the newly sorted array"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Here are the unsorted numbers:\n",
"\n",
"40 \n",
"\n",
"22 \n",
"\n",
"4 \n",
"\n",
"78 \n",
"\n",
"20 \n",
"\n",
"45 \n",
"\n",
"60 \n",
"\n",
"93 \n",
"\n",
"85 \n",
"\n",
"22 \n",
"\n",
"\n",
"\n",
"Here are the sorted numbers:\n",
"\n",
"93 \n",
"\n",
"85 \n",
"\n",
"78 \n",
"\n",
"60 \n",
"\n",
"45 \n",
"\n",
"40 \n",
"\n",
"22 \n",
"\n",
"22 \n",
"\n",
"20 \n",
"\n",
"4 \n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C25DISK1, Page number:533"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Two dimensional array declaration\n",
"disks= [[[] for ni in range(4)] for mi in range(2)]\n",
"\n",
"#Assign values to the 2Darray\n",
"disks[0][0]=2.39\n",
"disks[0][1]=2.75\n",
"disks[0][2]=3.29\n",
"disks[0][3]=3.59\n",
"\n",
"disks[1][0]=1.75\n",
"disks[1][1]=2.19\n",
"disks[1][2]=2.69\n",
"disks[1][3]=2.95\n",
"\n",
"#Print the values in the array\n",
"for row in range(0,2,1):\n",
" for col in range(0,4,1):\n",
" print \"$\",'%.2f'%disks[row][col],\"\\n\","
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"$ 2.39 \n",
"$ 2.75 \n",
"$ 3.29 \n",
"$ 3.59 \n",
"$ 1.75 \n",
"$ 2.19 \n",
"$ 2.69 \n",
"$ 2.95 \n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C25DISK2, Page number:534"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Two dimensional array declaration\n",
"disks= [[[] for ni in range(4)] for mi in range(2)]\n",
"\n",
"#Assign values to the 2Darray\n",
"disks[0][0]=2.39\n",
"disks[0][1]=2.75\n",
"disks[0][2]=3.29\n",
"disks[0][3]=3.59\n",
"\n",
"disks[1][0]=1.75\n",
"disks[1][1]=2.19\n",
"disks[1][2]=2.69\n",
"disks[1][3]=2.95\n",
"\n",
"#Print the values in the array\n",
"for row in range(0,2,1):\n",
" for col in range(0,4,1):\n",
" print \"$\",'%.2f'%disks[row][col],\"\\t\",\n",
" print \"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"$ 2.39 \t$ 2.75 \t$ 3.29 \t$ 3.59 \t\n",
"\n",
"$ 1.75 \t$ 2.19 \t$ 2.69 \t$ 2.95 \t\n",
"\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C25DISK3, Page number:535"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Two dimensional array declaration\n",
"disks= [[[] for ni in range(4)] for mi in range(2)]\n",
"\n",
"#Assign values to the 2Darray\n",
"disks[0][0]=2.39\n",
"disks[0][1]=2.75\n",
"disks[0][2]=3.29\n",
"disks[0][3]=3.59\n",
"\n",
"disks[1][0]=1.75\n",
"disks[1][1]=2.19\n",
"disks[1][2]=2.69\n",
"disks[1][3]=2.95\n",
"\n",
"#Print the column titles.\n",
"print \"\\tSingle-sided\\tDouble-sided\\tSingle-sided\\tDouble-sided\"\n",
"print \"\\tDouble-density\\tDouble-density\\tHigh-density\\tHigh-density\"\n",
"\n",
"#Print the prices\n",
"for row in range(0,2,1):\n",
" if row==0:\n",
" print \"3-1/2\\\"\\t\",\n",
" else:\n",
" print \"5-1/2\\\"\\t\",\n",
" for col in range(0,4,1):\n",
" print \"$\",'%.2f'%disks[row][col],\"\\t\\t\",\n",
" print \"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\tSingle-sided\tDouble-sided\tSingle-sided\tDouble-sided\n",
"\tDouble-density\tDouble-density\tHigh-density\tHigh-density\n",
"3-1/2\"\t$ 2.39 \t\t$ 2.75 \t\t$ 3.29 \t\t$ 3.59 \t\t\n",
"\n",
"5-1/2\"\t$ 1.75 \t\t$ 2.19 \t\t$ 2.69 \t\t$ 2.95 \t\t\n",
"\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C26SWAP, Page number:551"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Function definition\n",
"def swap_them(num1,num2):\n",
" num1,num2=num2,num1\n",
" return num1,num2\n",
"\n",
"#Variable declaration\n",
"i=10\n",
"j=20\n",
"\n",
"print \"\\n\\nBefore swap, i is \",i,\"and j is \",j,\"\\n\\n\"\n",
"\n",
"i,j=swap_them(i,j) # Function call\n",
"\n",
"print \"\\n\\nAfter swap, i is \",i,\"and j is \",j,\"\\n\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n",
"Before swap, i is 10 and j is 20 \n",
"\n",
"\n",
"\n",
"\n",
"After swap, i is 20 and j is 10 \n",
"\n",
"\n"
]
}
],
"prompt_number": 11
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C27CP1, Page number:565"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable Declaration\n",
"c=\"Bettye Lou Horn\"\n",
"\n",
"#Result\n",
"print \"My sister's name is \",c,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"My sister's name is Bettye Lou Horn \n",
"\n"
]
}
],
"prompt_number": 12
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C27CP2, Page number:566"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable Declaration\n",
"c=\"Bettye Lou Horn\"\n",
"\n",
"print \"My sister's maiden was \",c,\"\\n\"\n",
"\n",
"#Assigns new string to c\n",
"c=\"Bettye Lou Henderson\" \n",
"\n",
"#Result\n",
"print \"My sister's married name is \",c,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"My sister's maiden was Bettye Lou Horn \n",
"\n",
"My sister's married name is Bettye Lou Henderson \n",
"\n"
]
}
],
"prompt_number": 13
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C27CP3, Page number:566"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable Declaration\n",
"c=\"Bettye Lou Horn\"\n",
"\n",
"print \"My sister's maiden was \",c,\"\\n\"\n",
"c+=str(11) #makes c points to the last name\n",
"\n",
"c=\"Henderson\" #Assigns new string to c\n",
"\n",
"#Result\n",
"print \"My sister's married name is \",c,\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"My sister's maiden was Bettye Lou Horn \n",
"\n",
"My sister's married name is Henderson \n",
"\n"
]
}
],
"prompt_number": 14
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"C27PTST1, Page number:576"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Array declaration\n",
"name=[\"George\",\"Michelle\",\"Joe\",\"Marcus\",\"Stephanie\"]\n",
"\n",
"#Result\n",
"for ctr in range(0,5,1):\n",
" print \"String #\",(ctr+1),\"is\",name[ctr],\"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"String # 1 is George \n",
"\n",
"String # 2 is Michelle \n",
"\n",
"String # 3 is Joe \n",
"\n",
"String # 4 is Marcus \n",
"\n",
"String # 5 is Stephanie \n",
"\n"
]
}
],
"prompt_number": 15
}
],
"metadata": {}
}
]
}