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Thread: Counting Loop and Outputting

  1. #1
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    Default Counting Loop and Outputting

    Alright so I made a program that will count the number of fractions in a file and then output the number of times each fraction appeared. I got
    it to count the fraction and output. The problem is that I cannot figure out how to skip printing the same fractions count more than once. For example my code outputs:

    5/5 has a count of 1
    1/1 has a count of 2
    1/10 has a count of 1
    1/100 has a count of 1
    1/1 has a count of 2

    import java.util.Scanner;
    import java.io.FileNotFoundException;
    import java.lang.String;
    import java.io.File;
    import java.io.FileInputStream;
     
    public class Assignment1{
     
        public static void main(String [] args){    
            //Reads file containing fractions
            Scanner inputFile = null;
            try {
                inputFile = new Scanner(new FileInputStream("fractions.txt"));
            }
            catch (FileNotFoundException e) {
                System.out.println("File not found or not opened.");
                System.exit(0);
            }
     
            //variables
            String[]fractions = new String[100];  //will take in the fractions 
            String[]split = new String[2];        //used to split the fractions
            int [] numerator = new int [100];     // store numerators
            int [] denominator = new int [100];   //store denominators
            int count = 0;                        //number of lines in file
            int z = 0;
            int same = 0;                         //number of fractions that are the same
     
     
            //count the number of lines in the file, put each line into 
            //the string[]fractions
            while(inputFile.hasNextLine()){
                    fractions[z]=inputFile.nextLine();
                    count++;
                    //System.out.println(fractions[z]);
                    z++;
               }
     
            //split the fractions[] into two arrays: nummerator and denominator   
            for(int i = 0; i<count; i++){
                split = fractions[i].split("/");
                numerator[i]=Integer.valueOf(split[0]);
                denominator[i]=Integer.valueOf(split[1]);
     
            }  
     
            //used to compare specific numerator and denominator to the rest of the numbers
            int num;
            int den;
     
            //start off by comparing denominator, and then compares the numerator 
            //of like denominators
            for(int i = 0; i<=count; i++){
                den = denominator[i];
                num = numerator[i];
                for(int a = 1; a<count; a++){     // 
                    if(den == denominator[a]){    //compare denominators
                       if(num == numerator[a]){   // compare numerators
                            same++;
                       }     
                    }
                }
                //I am putting this in because I could not figure out why 
                //the first and last fractions were printing a count of 0
                if(same<=1){
                    System.out.println(num+ "/" + den + " has a count of 1");
                }else{
                    System.out.println(num+ "/" + den + " has a count of "+ same); 
                }
                same=0; 
            }
     
            //output the totals
     
     
        }
    }


  2. #2
    Member Chris.Brown.SPE's Avatar
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    Default Re: Counting Loop and Outputting

    Writing code is your job, helping you fix and understand it is mine.

    <-- Be sure to thank and REP (Star icon) those who have helped you. They appreciate it!

  3. #3
    Super Moderator jps's Avatar
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    Default Re: Counting Loop and Outputting

    Quote Originally Posted by Chris.Brown.SPE View Post
    ...Thread closed

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