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

Ruby Example: Write a program to search an item into the array using linear search.
Submitted by Nidhi, on January 20, 2022

Problem Solution:

In this program, we will create an array of integer elements. Then we will read an item from the user to search into the array using linear search and print the index of the item in the array.

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 successfully.

# Ruby program to search an item into the array 
# using linear search

arr = [12,45,23,39,37];

i    =   0;
item =   0;
flag =   0;

print "Enter item: ";
item = gets.chomp.to_i;  

flag = -1
while(i<arr.size)
    if(arr[i]==item)
        flag = i;
        break;
    end
    i = i + 1;
end

        
if(flag>=0)
    print "Item found at index: ",flag,"\n"; 
else
    print "Item not found\n"; 
end

Output:

Enter item: 39
Item found at index: 3

Explanation:

In the above program, we created an array of integer elements. Then we read an item from the user to search into the array using a linear search mechanism. Here, we matched the input item in the array one by one. If an item is found in an array, then the index will be printed, otherwise, the "Item not found" message will be printed.