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Thread: Array -Sorting

  1. #1
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    Default Array -Sorting

    Write a program to sort a given array
    (Passing Array to a Method in Java- get an array from user input
    Returning Array from the Method-sort and then return the sorted array)
    import java.util.Scanner; 
    public class SortClass {
       public int Ascending(int [] myarray) {
           int n=0,temp;
           int a[] = new int[n];  
     
           for (int i = 0; i < n; i++)   
    {  
    for (int j = i + 1; j < n; j++)   
        {  
        if (a[i] < a[j])   
            {  
                temp = a[i];  
                a[i] = a[j];  
                a[j] = temp;  
            }  
     
        }  
    System.out.println("Array elements in descending order:");  
    for ( i=n; i < n - 1; i--)   
        {  
            System.out.println(a[i]);  
        }  
    return (a[n - 1]);  
    }  
     
     
       }
     
     
    public static void main(String[] args)   
    {  
    int n, temp;  
    Scanner s = new Scanner(System.in); 
    SortClass SC=new SortClass();
    System.out.print("Enter the number of elements: ");  
    n = s.nextInt();  
    int a[] = new int[n];  
    System.out.println("Enter the elements of the array: ");  
    for (int i = 0; i < n; i++)   
    {  
    a[i] = s.nextInt();  
    }  
    for (int i = 0; i < n; i++)   
    {  
               SC.Ascending(a);
    }  
    System.out.println("Array elements in Ascending order:");  
    System.out.println("Array elements in Ascending order:"+SC.Ascending(a));  
     
    for (int i = 0; i < n; i++)   
    {  
    for (int j = i + 1; j < n; j++)   
    {  
    if (a[i] < a[j])   
    {  
    temp = a[i];  
    a[i] = a[j];  
    a[j] = temp;  
    }  
    }  
    }  
    System.out.println("Array elements in descending order:");  
    for (int i = 0; i < n - 1; i++)   
    {  
    System.out.println(a[i]);  
    }  
    System.out.print(a[n - 1]);  
    }  
     
    }

    Error

    --- exec-maven-plugin:3.0.0:exec (default-cli) @ mavenproject1 ---
    Enter the number of elements: 4
    Enter the elements of the array:
    50
    6
    70
    2
    Exception in thread "main" java.lang.RuntimeException: Uncompilable code - missing return statement
    at SortClass.Ascending(SortClass.java:1)
    at SortClass.main(SortClass.java:56)
    Command execution failed.

    Thanks in advance.
    Last edited by nandhutee; February 16th, 2023 at 09:01 PM. Reason: To Add Java Code

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Array -Sorting

    What have you tried? Post your code if you need help with it.
    This site does not provide full source code.

    Be sure to wrap all posted code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Array -Sorting

    k.

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: Array -Sorting

    The code is very poorly formatted making it hard to read and understand. Please fix the code's formatting.
    missing return statement
    There is a missing return statement in the Ascending method (note java standards suggest method names should start with lowercase letter).
    There needs to be a return statement at the end of all execution paths. The return statement is inside of a loop which might not be executed. Make sure there is a return statement outside of the loop.
    The code's poor formatting makes it hard to see.
    If you don't understand my answer, don't ignore it, ask a question.

  5. The Following User Says Thank You to Norm For This Useful Post:

    nandhutee (February 18th, 2023)

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