Java Community | Help. Code. Learn.•3w ago

pratice problem

import java.util.Arrays; import java.util.Scanner; public class L1P01{ public static void main(String[] args){ Scanner reader = new Scanner(System.in); String [][]names = new String[5][2];
for(int i =0; i<names.length; i++){ System.out.println("Enter first & last names"); String fullNames = reader.nextLine();
String[] parts = fullNames.split(" ");
names[i][0] = parts[0]; names[i][1] = parts[parts.length-1]; }
for(String[] print : names){ System.out.println(Arrays.toString(print)); } } } Organize Array alphabetically last name , don't use Arrays.sort

6 Replies

JavaBot•3w ago

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JavaBot•3w ago

Please format your code to make it more readable. For java, it should look like this:

```java
public void foo() {
 
}
```

```java
public void foo() {
 
}
```

JavaBot•3w ago

import java.util.Arrays;
import java.util.Scanner;
public class L1P01{
    public static void main(String[] args){
        Scanner reader = new Scanner(System.in);
        String [][]names = new String[5][2];
        
        for(int i =0; i<names.length; i++){
            System.out.println("Enter first & last names");
            String fullNames = reader.nextLine();
            
           String[] parts = fullNames.split(" ");
            
            names[i][0] = parts[0];
            names[i][1] = parts[parts.length-1];
            }
            
            for(String[] print : names){
                System.out.println(Arrays.toString(print));
            }
        }
}

Organize Array alphabetically last name , don't use Arrays.sort

import java.util.Arrays;
import java.util.Scanner;
public class L1P01{
    public static void main(String[] args){
        Scanner reader = new Scanner(System.in);
        String [][]names = new String[5][2];
        
        for(int i =0; i<names.length; i++){
            System.out.println("Enter first & last names");
            String fullNames = reader.nextLine();
            
           String[] parts = fullNames.split(" ");
            
            names[i][0] = parts[0];
            names[i][1] = parts[parts.length-1];
            }
            
            for(String[] print : names){
                System.out.println(Arrays.toString(print));
            }
        }
}

Organize Array alphabetically last name , don't use Arrays.sort

dan1st•3w ago

What is the problem with it?

Madjosz•3w ago

If you are supposed to sort the array by hand without calling library functions you should pick any sorting algorithm and implement it. Personally I find bubblesort the easiest to implement.

JavaBot•3w ago

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