Selection Sort in Java

Author: Deepali-Srivastava

sorting/SelectionSort.java

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+/*
+Copyright (C) Deepali Srivastava - All Rights Reserved
+This code is part of DSA course available on CourseGalaxy.com    
+*/
+
+import java.util.Scanner;
+
+public class SelectionSort 
+{
+	private SelectionSort(){} //this class is not for instantiation
+		
+	public static void sort(int[] a, int n) 
+	{
+		int minIndex,temp,i,j;
+		
+		for(i=0; i<n-1; i++)   
+		{
+			minIndex=i;
+			for(j=i+1; j<n; j++)  
+			{
+				if(a[j]<a[minIndex])
+					minIndex=j;
+			}
+			if(i!=minIndex)
+			{
+				temp = a[i];
+				a[i] = a[minIndex];
+				a[minIndex] = temp;
+			}
+		}
+	}
+	
+	public static void main(String[] args)
+	{
+		int i,n;
+		int[] a = new int[20];
+		Scanner scan = new Scanner(System.in);	
+		
+		System.out.print("Enter the number of elements : ");
+		n = scan.nextInt();
+				
+		for(i=0; i<n; i++)
+		{
+			System.out.print("Enter element " + (i+1) + " : ");
+			a[i] = scan.nextInt();
+		}
+		
+		sort(a,n);
+		
+		System.out.println("Sorted array is : ");
+		for(i=0; i<n; i++)
+			System.out.print(a[i] + " ");
+		System.out.println();
+		scan.close();
+	}
+}