java list to set
Set<Foo> foo = new HashSet<Foo>(myList);java list to set
Set<Foo> foo = new HashSet<Foo>(myList);selection sort in java
public static void SelectionSort(int[] arr)
{
int small;
for (int i = 0; i <arr.length - 1; i++)
{
small = i;
for (int j = i + 1; j < arr.length; j++)
{
//if current position is less than previous smallest
if (arr[j] < arr[small])
{
small = j;
//swap values
int temp = arr[i];
arr[i] = arr[small];
arr[small] = temp;
}
}
}
}how to sort collection in java
// Use Collections.sort()
import java.util.*;
ArrayList<String> al = new ArrayList<String>();
al.add("teach");
al.add("sleep");
al.add("geek");
Collections.sort(al);//just pass any collection object reference
System.out.println(al);//output :- [geek,sleep,teach]
or
/*
ArrayList<Integer> intal = new ArrayList<Integer>();
al.add(4);
al.add(8);
al.add(2);
Collections.sort(intal);
System.out.println(intal);//output :- [2,4,8]
*/Copyright © 2021 Codeinu
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