12 Days of Christmas
            
                        
                    
                        
                    425
        
            Abundant Numbers
            731
                        
                    742
        
            Arithmetic Numbers
            
                        
                    856
                        
                    
        
            brainfuck
            
                        
                    
                        
                    495
        
            Card Number Validation
            
                        
                    
                        
                    598
        
            Collatz
            
                        
                    
                        
                    781
        
            Divisors
            
                        
                    
                        
                    857
        
            Fibonacci
            
                        
                    
                        
                    947
        
            Fizz Buzz
            
                        
                    
                        
                    898
        
            Foo Fizz Buzz Bar
            
                        
                    
                        
                    795
        
            Game of Life
            
                        
                    
                        
                    461
        
            Intersection
            
                        
                    
                        
                    598
        
            ISBN
            
                        
                    
                        
                    617
        
            Kaprekar Numbers
            
                        
                    
                        
                    229
        
            Maze
            
                        
                    
                        
                    419
        
            Niven Numbers
            
                        
                    
                        
                    917
        
            ROT13
            
                        
                    
                        
                    831
        
            Sierpiński Triangle
            
                        
                    
                        
                    540
        
            Tic-tac-toe
            
                        
                    476