java sorting array code example
Example 1: sort array java
import java. util. Arrays;
Arrays. sort(array);
Example 2: Arrays.sort() in java
import java.util.Arrays;
public class SortStringAlphabeticalOrder
{
public static void main(String[] args)
{
String[] strAsc = {"Bear","Fox","Deer","Cheetah","Anteater","Elephant"};
System.out.println("Before sorting: ");
for(String string : strAsc)
{
System.out.println(string);
}
Arrays.sort(strAsc);
System.out.println("-----------------------------------");
System.out.println("After sorting: ");
for(String str : strAsc)
{
System.out.println(str);
}
}
}
Example 3: efficient way to sort an array in java
enum Code {
Str1(1), Str2(2), Str3(3), Str4(4), Str5(5));
int sortNumber;
Code(int sortNumber) {
this.sortNumber = sortNumber;
}
int returnNumber() {
return sortNumber;
}
};
public static void main(String[] args) {
List<Object> obj = new ArrayList<Object>();
Collections.sort(obj, new Comparator<Object>() {
@Override
public int compare(Object object1, Object object2) {
return Code.valueOf(object1.getStr()).returnNumber() > Code.valueOf(object2.getStr()).returnNumber() ? 1 : -1;
}
});
}
Example 4: Arrays.sort() in java
import java.util.Arrays;
import java.util.Collections;
public class SortStringAlphabeticalOrder
{
public static void main(String[] args)
{
String[] strDesc = {"Bear","Fox","Deer","Cheetah","Anteater","Elephant"};
System.out.println("Before sorting: ");
for(String string : strDesc)
{
System.out.println(string);
}
Arrays.sort(strDesc, Collections.reverseOrder());
System.out.println("-----------------------------------");
System.out.println("Sorting string array in descending or reverse order: ");
for(String string : strDesc)
{
System.out.println(string);
}
}
}
Example 5: java sort method
Arrays.sort();
Example 6: java array sort by element
int[][] array = new int[m][2];
Arrays.sort(array, (a,b)-> Integer.compare(a[1], b[1]));