Added_Linear_search

Java/Linear_search.java

@@ -0,0 +1,27 @@
+import java.util.*;
+public class linearsearch{	
+	public static int lisearch(int key,int numbers[]){
+		for(int i=0; i<=numbers.length ;i++){
+			if (numbers[i]==key){
+				return i;
+			}
+
+		}
+
+		return -1;
+	}
+
+	public static void main(String args[]){
+		int numbers[] ={2,4,6,8,10,12,14,16};
+		Scanner s = new Scanner(System.in);
+		System.out.println("enter the key:");
+		int key = s.nextInt();
+		int index = lisearch(key , numbers);
+		if(index==-1){
+			System.out.println("index not found");
+	}
+		else{
+			System.out.println("index at key " + key +" is : " + index);
+		}
+	}
+	}