Sort Java Array List
in descending order using comparator
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
public class SortArrayListInDescendingOrderExample
{
public static void main(String[] args)
{
ArrayList arrayList = new ArrayList();
arrayList.add("A");
arrayList.add("B");
arrayList.add("C");
arrayList.add("D");
arrayList.add("E");
Comparator comparator = Collections.reverseOrder();
System.out.println("Before sorting
ArrayList in descending order : "
+ arrayList);
Collections.sort(arrayList,comparator);
System.out.println("After sorting
ArrayList in descending order : "
+ arrayList);
}
}
Java Bubble Sort
public class BubbleSort
{
public static void
main(String[] args)
{
int intArray[] = new
int[]{5,90,35,45,150,3};
System.out.println("Array
Before Bubble Sort");
for(int i=0; i <
intArray.length; i++)
{
System.out.print(intArray[i]
+ " ");
}
bubbleSort(intArray);
System.out.println("");
System.out.println("Array
After Bubble Sort");
for(int i=0; i <
intArray.length; i++)
{
System.out.print(intArray[i]
+ " ");
}
}
private static void
bubbleSort(int[] intArray)
{
int n =
intArray.length;
int temp = 0;
for(int i=0; i < n;
i++)
{
for(int j=1; j <
(n-i); j++)
{
if(intArray[j-1] >
intArray[j])
{
temp = intArray[j-1];
intArray[j-1] =
intArray[j];
intArray[j] = temp;
}
}
}
}
}
Sort elements of
Java Vector
import java.util.Vector;
import
java.util.Collections;
public class
SortJavaVectorExample
{
public static void main(String[] args)
{
Vector v = new
Vector();
v.add("1");
v.add("3");
v.add("5");
v.add("2");
v.add("4");
Collections.sort(v);
System.out.println("Vector
elements after sorting in ascending order : ");
for(int i=0;
i
System.out.println(v.get(i));
}
}
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