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Scala program to search an item into the array using linear search

Here, we are going to learn how to search an item into the array using linear search in Scala programming language?
Submitted by Nidhi, on May 08, 2021

Problem Solution:

Here, we will create an integer array and then we will search an item from the array using linear or sequential search.

In the linear searching, we compare each item one by one from start to end. If an item is found then we stop the searching.

Program/Source Code:

The source code to search an item into the array using linear search is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to search an item into array 
// using linear search

import scala.util.control.Breaks._    

object Sample {  
    def main(args: Array[String]) {  
        var IntArray = Array(11,12,13,14,15)
        
        var i:Int=0
        var item:Int=0
        var flag:Int=0
        
        print("Enter item: ");
        item=scala.io.StdIn.readInt();
        
        breakable
        {
            flag = -1
            while(i<IntArray.size)
            {
                if(IntArray(i)==item)
                {
                    flag=i;
                    break;
                }
                i=i+1
            }
        }
        
        if(flag>=0)
            printf("Item found at index: %d\n",flag); 
        else
            printf("Item not found\n"); 
    }
} 

Output:

Enter item: 12
Item found at index: 1

Explanation:

In the above program, we used an object-oriented approach to create the program. We created an object Sample, and we defined main() function. The main() function is the entry point for the program.

In the main() function, we created an integer array IntArray with 5 elements. Then we read an item from the user and search into the array using a linear search mechanism. After that, we printed the index of the item on the console screen.

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