How to compare two arrays in java

Sat Nov 27, 2010 1:38 am

How to compare two arrays of characters in java
hey, im working on this project for homework and it consists of comparing the elements of one array to another. I had it running but then i did something and it made it give an exception error.

also before i messed that up i was stuck on how to compare the 2 arrays.

Code:: //holds methods used for drivers test import java.util.Scanner; //scanner class import class DriverTestMethods //class name { private String[] answers = { "B", "D", "A", "A", "C", "A", "B", "A", "C", "D", "B", "C", "D", "A", "D", "C", "C", "B", "D", "A" }; //the real answers. private String[] inputted; //inputted answers private String[] questions; //displays questions. private int correct = 0; //holds amount of correct answers. private int incorrect = 0; //holds amount of incorrect answers. private int qcounter = 1; //counts questions til 20. private int index = 0; Scanner keyboard = new Scanner(System.in);// holds input void testBegin() { do { System.out.println("Question " + qcounter +" goes here"); inputted[index] = keyboard.next(); if(inputted[index] == answers[index]) { correct++; } else { incorrect++; } qcounter+=1; index+=1; }while (qcounter != 21); passed(); } void passed() { if(correct >= 15) { System.out.println("Good job, you passed!"); System.out.println("Correct: " + correct); System.out.println("Incorrect: " + incorrect); } else if(incorrect >= 5) { System.out.println("Sorry, You Suck!!"); System.out.println("Correct: " + correct); System.out.println("Incorrect: " + incorrect); } System.exit(0); } }

Attachments

drivertestfiles.zip: there are 2 java files compressed,; (1.25 KiB) Downloaded 837 times

Last edited by 3nriched on Sun Nov 28, 2010 2:05 am, edited 1 time in total.

Sat Nov 27, 2010 5:43 am

Ok! Finally Found The Error! :yahoo:

But I don't know is that you looking for... :swoon:

Here what I did,

I changed

Code:: private String inputted; //inputted answers inputted = keyboard.next(); inputted.equals(answers[index]

And Here the whole java file.

Code:: //holds methods used for drivers test import java.util.Scanner; //scanner class import class DriverTestMethods //class name { private String[] answers = { "B", "D", "A", "A", "C", "A", "B", "A", "C", "D", "B", "C", "D", "A", "D", "C", "C", "B", "D", "A" }; //the real answers. private String inputted; //inputted answers private String[] questions; //displays questions. private int correct = 0; //holds amount of correct answers. private int incorrect = 0; //holds amount of incorrect answers. private int qcounter = 1; //counts questions til 20. private int index = 0; Scanner keyboard = new Scanner(System.in);// holds input void testBegin() { do { System.out.println("Question " + qcounter +" goes here"); inputted = keyboard.next(); if(inputted.equals(answers[index])) { correct++; } else { incorrect++; } qcounter+=1; index+=1; }while (qcounter != 21); passed(); } void passed() { if(correct >= 15) { System.out.println("Good job, you passed!"); System.out.println("Correct: " + correct); System.out.println("Incorrect: " + incorrect); } else if(incorrect >= 5) { System.out.println("Sorry, You Suck!!"); System.out.println("Correct: " + correct); System.out.println("Incorrect: " + incorrect); } System.exit(0); } }

If you have any question ask me! :rolf:

Sun Nov 28, 2010 12:59 am

nice dude, i actually made it passed this part earlier today but this helps me with a different problem i have now ..lol
thanks again man!

How to compare two arrays in java

How to compare two arrays in java

Re: need some help with array comparing program

Re: need some help with array comparing program