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Thread: Inputing file (.txt) and finding the highest number in the file

  1. #1
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    Default Inputing file (.txt) and finding the highest number in the file

    I have attached my src folder. It contains the .java and the in.txt

    the txt file is in this format

    number of users
    how many numbers are listed for user1 (ex 4)
    user1 number 1
    user1 number 2
    user1 number 3
    user1 number 4
    how many numbers are listed for user 2 (ex 3)
    user2 number 1
    user2 number 2
    user2 number 3

    and so on.

    I am trying to calculate the max number for each user.

    Please help, i am getting errors after adding an if statement.

    I believe the problem is around the if statement

    Scanner inputFile = new Scanner(file);
    		int numusers = inputFile.nextInt();	
    		int counter2 = 0;
    		System.out.println(numusers);
    		while(numusers>counter2)
    				{
    				int numrates = inputFile.nextInt();		// gets number of rates for user
    				int[] a = new int[numrates];	
    				System.out.println("This is the numrates: "+ numrates);
    				int counter = 0;
    							while(counter<numrates) // goes until counter hits number of rates specified
    							{
    							int maximum = -1;
    							for (int i = 0; i <= a.length; i++)  //calculates the max
    								{
    									{ 	a[i] = inputFile.nextInt();
    										if (a[i] > maximum) {
    										maximum = a[i]; // writes number to maximum
    										}
    									}
    								if(i==a.length)  // when counter (i) hits the last digit, this writes the maximum value found
    								{	System.out.println("This is the max: "+ maximum);}
    								}
    							counter++; //counts against the number of rates per user
     
    							}
    				counter2++; //counts the number of users that program has ran through
    				}
    			        inputFile.close();
     
    	}
    }
    Attached Files Attached Files
    Last edited by alf; March 14th, 2010 at 10:53 PM.


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: Inputing file (.txt) and finding the highest number in the file

    I recommend posting a short snippet of your code directly into your posted text (surrounded by the code tags), I suggest this because many including myself may be hesitant to download and open a zip file.

  3. #3
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    Default Re: Inputing file (.txt) and finding the highest number in the file

    edited

    site should allow for .txt or .java files to be uploaded

  4. #4
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    Default Re: Inputing file (.txt) and finding the highest number in the file

    bump.. please help!

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