Ruby program to sort an array in descending order using selection sort

Program/Source Code:

The source code to sort an array in descending order using selection sort is given below. The given program is compiled and executed successfully.

# Ruby program to sort an array in descending order 
# using selection sort

arr = [12,39,49,87,68];

i=0;
j=0;
t=0;
max=0;

while(i<5)
    max=i;
    j=i + 1
    while(j<5)
        if(arr[j]>arr[max])
            max=j;
        end
        j=j + 1;
    end
    
    t=arr[i];
    arr[i]=arr[max];
    arr[max]=t;
    
    i=i + 1;
end

i=0;
print "Sorted Array in descending order: \n";
while(i<5)
    print arr[i]," ";
    i=i+1;
end

Output:

Sorted Array in descending order: 
87 68 49 39 12 

Explanation:

In the above program, we created an array of integer elements. Then we sorted the array elements in descending order using the selection sort mechanism. After that, we printed the sorted array.