Skip to main content

Selection Sort in JAVA

What is selection sort?

It is a sorting technique that is based on the partitioning of array into two parts, sorted and unsorted.

The process is:-

1) Find minimum element in unsorted array.
2) Swap the element at the end of sorted array.

when i=0 we don't have any sorted array so element will be replaced from first element later the sorted array end will growas the index.


underline elements are sorted array, the length is increasing with each minimum element added at the end.

minimum element11
 11 25 12 22 64 
minimum element12
 11 12 25 22 64 
minimum element22
 11 12 22 25 64 
minimum element25
 11 12 22 25 64 
minimum element64
 11 12 22 25 64 


package sorting;

public class SelectionSort {

 //function to print array
  public static void print(int[] arr)
   for(int i=0;i<=arr.length-1;i++)
    System.out.print(" "+arr[i]);
   System.out.println(" ");
  //function to swap elements
  public static int[] swap(int[] arr,int i, int j)
   int temp;
   return arr;
  //program to find minimum element in unsorted array( i to end)
  public static int min(int[] arr,int i)
   int min=i;
   System.out.println("minimum element"+arr[min]);
   return min;
  public static void main(String[] args)
   int[] arr={64,25,12,22,11};
   int min;
   for(int i=0;i<=arr.length-1;i++)
    //find minimum element in unsorted array ( i to end)
    //swap minimum element with then end of sorted array(i)
    //print the array



Popular posts from this blog

Driver program to perform operations in graph

Driver program to perform operations in graph:-

package com.problems.graph;publicclassGraphDriver{publicstaticvoidmain(String[] args){ BFSGraph g=new BFSGraph(); g.addVertex('A'); g.addVertex('B'); g.addVertex('C'); g.addVertex('D'); g.addVertex('E'); g.addVertex('F'); g.addVertex('G'); g.addVertex('H'); g.addEdge(0,1); g.addEdge(1,2); g.addEdge(1,7); g.addEdge(2,3); g.addEdge(2,4); g.addEdge(7,4); g.addEdge(4,5); g.addEdge(4,6); g.bfs();}}

Shortest Path from source to Vertex :- Dijkstra Algorithm

Shortest Path from source to Vertex :- Dijkstra Algorithm:-

Dijkstra Algorithms is an algorithm use to find the shortest path from source vertex to a given vertex.

package Graph;importjava.util.HashMap;abstractpublicclassDirectedGraph{ Vertex[] vertexlist=new Vertex[10]; HashMap<Character,HashMap<Character,Integer>> edgelist=new HashMap<>(); Vertex vertex;//count of vertex and edgestaticint vertexcount=0;int edgecount=0;/* * This function takes a label and insert in the vertex list as well as edge list since it is new vertex it will add * null to its adjoining vertices */intaddVertex(char label){ vertex=new Vertex(label); vertexlist[vertexcount]=vertex; System.out.println(vertexlist[vertexcount].label); edgelist.put(vertex.label,null); vertexcount++;return vertexcount;}intaddEdge(char label,char[] labels,int[] distances){ HashMap<Character,Integer> vertexlist=new HashMap<>();for(int i=0;i<labels.length;i++){ vertexlist.put(labels[i],…