Das Programm gibt beim Vergleichen eine Reihe von Nullen aus. Ich denke ich vergleiche nicht richtig, obwohl ich es versucht habe == und das gibt nichts aus. Unten ist der Code und darunter ist die NameAgeOcc.txtVergleichen von String-Arrays Ausgaben Null
import java.util.Scanner;
import java.io.*;
public class MoreSelectionSortAndParallelArrays
{
public static void main(String[] args)
{
Scanner inputStream = null;
try
{
inputStream = new Scanner(new FileInputStream("NameAgeOcc.txt"));
}
catch(FileNotFoundException error)
{
System.out.println("Unable to open input file.");
System.exit(0);
}
int length=inputStream.nextInt();
int ages [] = new int[length];
String names [] = new String[length];
String occupations [] = new String[length];
String junk= inputStream.nextLine() ;
int i;
for(i=0;i<length;i++)
{
names[i]=inputStream.nextLine();
ages[i]=inputStream.nextInt();
junk=inputStream.nextLine();
occupations[i]=inputStream.nextLine();
}
System.out.printf("%-25s%-8s%24s%n","Names"," Ages","Occupations");
for(i=0;i<length;i++)
{
System.out.printf("%-25s%6d%24s%n",names[i],ages[i],occupations[i]);
}
String Temp, Temp3;
int minVal,minPos,y,Temp2;
for(i=0;i<length;i++)
{
minVal=ages[i];
minPos=i;
for(y=i+1;y<length;y++)
{
if(ages[y]<minVal)
{
minVal=ages[y];
minPos=y;
}
}
Temp2 = ages[minPos];
ages[minPos] = ages[i];
ages[i] = Temp2;
Temp = names[minPos];
names[minPos] = names[i];
names[i] = Temp;
Temp3 = occupations[minPos];
occupations[minPos] = occupations[i];
occupations[i] = Temp3;
}
System.out.println();
System.out.printf("%-25s%-8s%24s%n","Names"," Ages","Occupations");
for(i=0;i<length;i++)
{
System.out.printf("%-25s%6d%24s%n",names[i],ages[i],occupations[i]);
}
int studentCount=0;
for (i=0;i<length;i++)
{
if(occupations[i].equalsIgnoreCase("student"));
studentCount++;
}
int studentAges [] = new int[studentCount];
String studentNames [] = new String[studentCount];
System.out.printf("%-25s%-8s%n","Names"," Ages");
for (i=0;i<studentCount;i++)
{
System.out.printf("%-25s%6d%n",studentNames[i],studentAges[i]);
}
inputStream.close();
}
}
Die .txt
15
Smith, John
26
Baker
Jones, Susan
15
Student
Mouse, Mickey
31
Theme park employee
Mouse, Mighty
48
Cartoon super hero
Anderson, William
35
Computer Programmer
Parker, Cindy
18
Author
McCain, John
20
Student
Armstrong, Michelle
17
Student
Thompson, Anne
29
Doctor
Li, Steve
15
Student
James, Tanya
20
Student
Moore, James
32
Teacher
Andrews, Julie
75
Actress
Obama, Michelle
46
Lawyer
Michaels, Todd
51
Student
Achten Sie darauf, die leere Zeile am Ende der .txt (drücken Sie die Eingabetaste oder zurück) kopieren
Danke. Ich fühle mich jetzt irgendwie dumm, aber ich habe es funktioniert! – Chromey