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Thread: Arrays, code counts how many numbers in specified range

  1. #1
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    Post Arrays, code counts how many numbers in specified range

    I'm very new to programming, and I would greatly appreciate some help with this. The following code is supposed to count how many numbers are in a specified range, 4 to 17, in the array.


    The code I have written (which could be totally off for all I know) is right here:

    import java.io.*;
     
    public class NumberInRange {
    	public static void main(String[] args) {
     
    		int list[] = {14, 1, 22, 17, 36, 7, -43, 5};
    		int min = 4;
    		int max = 17;
    		int count = 0;
    		countInRange();
    	}
     
    		public static int countInRange (int [] list) {
     
    			for (int i = 0; int i < list.length; i++) {
     
    				if (list[i] >= min && list[i] <= max) {
    				count++;
    				}			
    			}
    			return count;
    		}	
    }

    Any help would be greatly appreciated! I do not know what the errors mean, but here are what the four errors say:


    NumberInRange.java:19: '.class' expected
    for (int i = 0; int i < list.length; i++) {
    ^
    NumberInRange.java:19: > expected
    for (int i = 0; int i < list.length; i++) {
    ^
    NumberInRange.java:19: ')' expected
    for (int i = 0; int i < list.length; i++) {
    ^
    NumberInRange.java:19: illegal start of expression
    for (int i = 0; int i < list.length; i++) {
    ^


  2. #2
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    Default Re: Arrays, code counts how many numbers in specified range

    Here are the issues I am seeing:
    1) The integer variables min, max and count are declared locally inside of the main method but you try to access them directly in the countInRange method.
    2) When you call the countInRange method inside of the main method, you do not supply a parameter; which it is expecting.

    Here are some links to help you understand the kinds of variables and an idea of what variable scope is:
    Variables (The Java™ Tutorials > Learning the Java Language > Language Basics)
    Variable Scope : Variable ScopeLanguageJava Tutorial

  3. The Following User Says Thank You to KucerakJM For This Useful Post:

    omarjordan (April 18th, 2012)

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