Ruby program to merge two integer arrays without using library function

arr1 = [10,20,30,40,50];
arr2 = [60,70,80];
arr3 = Array.new(8);

count=0;
count1=0;

while(count<8)
    if(count<arr1.size)
        arr3[count]=arr1[count];
    else
        arr3[count]=arr2[count1];
        count1=count1 + 1;
    end
    count = count + 1;
end

print "Merged array: \n";
i=0;
while(i<8)
    print arr3[i]," ";
    i=i+1;
end

Output:

Merged array: 
10 20 30 40 50 60 70 80