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misterpandaamisterpandaa
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add week4 solution
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‎Week4/BabyNames/Assignment.java

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/**
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* Write a description of Assignment here.
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*
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* @author Deny Kiantono
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* @version 1.0
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*/
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import edu.duke.*;
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import org.apache.commons.csv.*;
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import java.io.*;
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public class Assignment {
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public void totalBirths(FileResource fr) {
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int totalBirths = 0;
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int boyTotalBirths = 0;
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int girlTotalBirths = 0;
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int boyCount = 0;
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int girlCount = 0;
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for (CSVRecord record : fr.getCSVParser(false)) {
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int numBorn = Integer.parseInt(record.get(2));
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totalBirths += numBorn;
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if (record.get(1).equals("M")) {
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boyTotalBirths += numBorn;
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boyCount++;
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} else {
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girlTotalBirths += numBorn;
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girlCount++;
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}
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}
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System.out.println("Total data = " + (boyCount + girlCount));
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System.out.println("Total births = " + totalBirths);
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System.out.println("Total girls = " + girlCount);
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System.out.println("Total girls births = " + girlTotalBirths);
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System.out.println("Total boys = " + boyCount);
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System.out.println("Total boys births = " + boyTotalBirths);
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}
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public void testTotalBirths() {
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FileResource fr = new FileResource();
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totalBirths(fr);
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}
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public int getRank(int year, String name, String gender) {
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FileResource fr = new FileResource("us_babynames/us_babynames_test/yob" + year + "short.csv" );
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int rank = 0;
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boolean recordFound = false;
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for (CSVRecord record : fr.getCSVParser(false)) {
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String currentName = record.get(0);
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String currentGender = record.get(1);
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if (currentGender.equals(gender)) {
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rank++;
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if (currentName.equals(name)) {
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recordFound = true;
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break;
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}
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}
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}
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if (recordFound) {
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return rank;
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} else {
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return -1;
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}
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}
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public void testGetRank() {
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int year = 2012;
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String name = "Mason";
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String gender = "M";
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int rank = getRank(year, name, gender);
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System.out.println(name + " rank is " + rank);
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}
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public String getName(int year, int rank, String gender) {
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FileResource fr = new FileResource("us_babynames/us_babynames_test/yob" + year + "short.csv" );
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String name = "NO NAME";
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int currentRank = 0;
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for (CSVRecord record : fr.getCSVParser(false)) {
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String currentGender = record.get(1);
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if (currentGender.equals(gender)) {
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currentRank++;
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if (currentRank == rank) {
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name = record.get(0);
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break;
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}
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}
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}
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return name;
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}
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public void testGetName() {
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int year = 2012;
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int rank = 2;
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String gender = "M";
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String name = getName(year, rank, gender);
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System.out.println(year + " rank " + rank + " is " + name);
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}
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public void whatIsNameInYear(String name, int year, int newYear, String gender) {
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int currentYearRank = getRank(year, name, gender);
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String newName = getName(newYear, currentYearRank, gender);
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System.out.println(name + " born in " + newYear + " would be " + newName + " if she was born in " + newYear);
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}
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public void testWhatIsNameInYear() {
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whatIsNameInYear("Isabella", 2012, 2014, "F");
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}
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public int yearOfHighestRank(String name, String gender) {
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int year = Integer.MIN_VALUE;
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int rank = Integer.MAX_VALUE;
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DirectoryResource dr = new DirectoryResource();
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for (File f : dr.selectedFiles()) {
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int currentYear = Integer.parseInt(f.getName().substring(3, 7));
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int currentRank = getRank(currentYear, name, gender);
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if (currentRank != -1 && currentRank < rank) {
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rank = currentRank;
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year = currentYear;
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}
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}
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if (year == Integer.MIN_VALUE) {
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return -1;
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} else {
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return year;
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}
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}
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public void testYearOfHighestRank() {
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String name = "Mason";
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String gender = "M";
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System.out.println(name + " most popular year is " + yearOfHighestRank(name, gender));
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}
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public double getAverageRank(String name, String gender) {
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double totalRank = 0;
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int recordCount = 0;
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DirectoryResource dr = new DirectoryResource();
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for (File f : dr.selectedFiles()) {
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int currentYear = Integer.parseInt(f.getName().substring(3, 7));
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int currentRank = getRank(currentYear, name, gender);
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if (currentRank != -1) {
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totalRank += currentRank;
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recordCount++;
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}
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}
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if (recordCount == 0) {
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return -1.0;
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} else {
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return totalRank / recordCount;
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}
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}
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public void testGetAverageRank() {
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String name = "Mason";
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String gender = "M";
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System.out.println("Average rank for " + name + " is " + getAverageRank(name, gender));
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name = "Jacob";
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gender = "M";
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System.out.println("Average rank for " + name + " is " + getAverageRank(name, gender));
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}
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public int getTotalBirthsRankedHigher(int year, String name, String gender) {
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FileResource fr = new FileResource("us_babynames/us_babynames_test/yob" + year + "short.csv" );
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int rank = getRank(year, name, gender);
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int totalBirths = 0;
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int currentRank = 0;
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for (CSVRecord record : fr.getCSVParser(false)) {
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String currentGender = record.get(1);
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if (currentGender.equals(gender)) {
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currentRank++;
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if (currentRank < rank) {
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int currentBirths = Integer.parseInt(record.get(2));
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totalBirths += currentBirths;
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} else {
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break;
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}
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}
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}
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return totalBirths;
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}
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public void testGetTotalBirthsRankedHigher() {
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int year = 2012;
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String name = "Ethan";
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String gender = "M";
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System.out.println("Total births higher than " + name + " is " + getTotalBirthsRankedHigher(year, name, gender));
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}
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}

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